阅读理解。 Making them s

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阅读理解。                                                              Making them sweeter
         JAPANESE scientists have developed a special kind of tomato.  It can change an eater"s sense of
taste,says a report in Science News.  For about an hour after a person eats one of the tomatoes,sour foods taste sweet.
         Say you eat one of the tomatoes before lunch.  Then you take a bite of a lemon (柠檬).  You will
find that the lemon tastes like super-sweet lemonade.
           How magical is that !  The key ingredient in the taste-changing tomatoes is " miraculin (非洲奇果蛋白 ) ". Miraculin is found in berries that grow in West Africa.  These fruits are sometimes sold as "
Miracle(奇迹)  Fruit"  berries.
        People have long known about the ability of miracle berries to change taste.  In some countries,the
berries are used  as a way to help people lose weight:  For example,a dieter can eat a berry and then eat
low-calorie sour foods that will
taste wonderfully sweet.
      Scientists found miraculin in the miracle berry in 1968. Since then,people have wondered how to
manufacture it. One way could be to harvest the berries.  The problem was that if demand got too large,
the berry plants could be driven to extinction.
      That"s where the Japanese scientists came in.  Professor Kazuhisa Kato and his team at the University of Tsukuba studied the DNA of the miracle berry.  They found a gene(基因)  that contained the
instructions for how to make miraculin.
       Kato and other researchers put the gene for miraculin into the DNA of a tomato. As a result,the
tomatoes started to make miraculin. Those tomatoes had just as much miraculin as miracle berries do.
These "miracle" tomatoes could be grown in large numbers.  If scientists can grow other foods with
miraculin inside,then there won"t be any need to harvest all the miracle berries.
      The researchers don"t know yet how the tomato-based miraculin can be used. Perhaps it could be sold as a dieting food,to be taken before meals.1. The tomato is special in that___.A. it tums all tastes sweet
B. it can only be eaten before lunch
C.  it changes a sour taste to a sweet one
D. it has a magical ingredient2. According to the article,the Japanese scientists____.    A. found a gene that contained instructions for making miraculin
B. discovered the secrets of miracle fruit berries in 1968
C.  have planted miracle tomatoes in large numbers
D. invented the miraculin gene and put it into the tomato=3.  According to the article,which of the following statements is TRUE?    A. It was a latest discovery that miracle berries could change taste.
B. The tomato is a low-calorie fruit that tastes wonderfully sweet.
C. Scientists have already found many uses for mariculin.
D. The tomato-based miraculin might help people lose weight,so it might be used as a dieting food.

答案

1-3: C A D

举一反三

阅读理解。     MONTREAL (Reuters)-Crossing the US-Canada border (边界) to go to church on a Sunday cost a US citizen $10,000 for breaking Washington"s strict new security(安全) rules.The expensive trip to church was a surprise for Richard Al-bert, who lives right on the Canadian border. Like the other half-dozen
people of Township 15, crossing the border is a daily occurrence for Albert. The nearby Quebec village of St. Pamphile is where they shop, eat and go to church.
     There are many such situations in these areas along the largely unguarded 5,530 mile border between
Canada and the US which in some cases actually runs down the middle of streets or throughbuildings.
     As a result, Albert said he did not expect any problems three weeks ago when he returned home to the US after attending church in Canada, as usual. The US customs (海关) station in this area is closed on
Sundays, so he just drove around the locked gate, as he had done every weekend since the gate appeared last May, following a tightening of border security. Two days later, Albert was told to go to the customs
office, where an officer told him he had been caught on camera crossing the border illegally(非法).
     Ottawa has given out special passes to some 300 US citizens in that area so they can enter the country when Canadian customs stations are closed, but the US stopped a similar program last May.That forces
the people to a 200 mile detour along hilly roads to get home through another border check point.
     Albert has requested that the customs office change its decisions on the fine, but he has not attended a Sunday church since. "I feel like I"m living in a prison," he said.1. We learn from the text that Richard Albert is_______.    A. an American living in Township 15
B. a Canadian living in a Quebec village
C. a Canadian working in a customs station
D. an American working in a Canadian church 2. Albert was fined because he_______.    A. failed to obey traffic rules
B. broke the American security rules
C. worked in St. Pamphile without a pass
D. damaged the gate of the customs office3. The underlined word " detour" in Paragraph 5 means______.    A. a drive through the town
B. a race across the fields
C. a roundabout way of travelling
D. a journey in the mountain area 4. What would be the best title for the text?   A. A Cross-country Trip.
B. A Special Border Pass.
C. An Unguarded Border.
D. An Expensive Church Visit.

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阅读理解。     LONDON ( Reuters) -Ecotourism (生态旅游) is  causing  a  lot
of damage to wildlife and may be endangering the survival(生存) of
the very animals people are flocking to see,according to researchers.
        Biologists and conservationists (自然环境持论者) are worried
because polar bears,dolphins, penguins and other creatures are
getting stressed and losing weight and some are dying.
       "Evidence (证据) is growing that many animals do not react
well to tourists in their backyard,"New Scientist Magazine said.
      The immediate effects researchers have noticed are changes in
behavior,heart rates,or stress hormone levels but they fear it could
get much worse and over the long term" could endanger the survival
of the very wildlife they want to see. "
      Although money produced through ecotourism,which has been
growing at about 10 - 30 percent a year,has major benefits for poor
countries and people living in rural areas,the Swiss-based World
Conservation Union(IUCN) and some govemments fear not all projects
are audited (审查) and based on environmentally friendly policies,
according to the magazine.
      "Transmission (传播) of disease to wildlife,or small changes
to wildlife health through disturbance of daily life or increased
stress levels,while not obvious to the casual observer,may translate
to lower survival and breeding," said Philip Seddon,of the University
of Otago in Dunedin,New Zealand.
    Scientists have noticed that bottle-neck dolphins along the
northeastern coast of New Zealand become nervously excited when
tourist boats arrive. Similar changes in behavior have been observed
in polar bears and yellow-eyed penguins in areas visited by ecotourists
that are producing smaller babies.
   Conservationists are now calling for more research into the
effect of ecotourism on animals and say the industry must be developed
carefully, They also want studies done before new ecotourism
projects are started.
      "The animals" welfare should be very important because without
them there will be no ecotourism," said Rochelle Constantine of
the University of Auckland in New Zealand.1. What"s the theme of the text?     A. Many animals are dying for lack of money.
B. There will be no ecotourism without animals.
C. Ecotourism could endanger the survival of the wildlife people want to see.
D. More research should be done on ecotourism.2. We may learn from the text that ____ .   A. ecotourism must be developed properly
B. polar bears are losing weight without enough food
C. all the poor countries have stopped ecotourism
D. money produced through ecotourism should be spent on wild life3. Which of the following is NOT mentioned in the text?  A. Many animals do not react well in their backyard.
B. Polar bears in areas visited by ecotourists are producing smaller babies.
C. Ecotourism has been growing at about 10 - 30 percent ayear.
D. Studies should be done before new ecotourism projects are started.4. What Rochelle Constantine said in the last paragraph implies that____．A. if people want to get high income,they must develop ecotourism
B. animals have rights to live their own life
C. animals are people"s good friends
D. people should take good care of wildlife

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阅读理解。     CCTV images were released today of a suspected rapist who attacked a woman in Glasgow city
center.
     Detectives have issued pictures of a man in a bid to catch the sex attacker who struck last month.
     The man is said to have scars on his forehead and chest and a tattoo() on his right arm.
     The attack took place in the early hours of Saturday, April 18, on waste ground between Carrick
Street and Broomielaw. Although the 27-year-old victim was not injured, she was left badly shaken. Her
attacker was last seen running in Argyle Street near to Cadogan Street.
     The man the police wish to speak to is described as a white male, aged around 20 and 5ft 6in tall. He
has a tanned complexion(黄褐色面肤), short gelled hair, muscular build(肌肉发达) with a scar on the
right side of his forehead. He is wearing a white T-shirt, light blue jeans with cargo pockets and white
training shoes.
     Detective Inspector Andy Mc William, of Stewart Street CID, said, "Today we"re issuing CCTV
images of a male pictured in a city center street in the early hours of Saturday, April 18. He may be able
to assist us in our investigation. I would ask him, or any person who recognizes him, to come forward. I"d
also ask anyone who was in the general areas of Broomielaw or Carrick Street on the night in question
and saw this man or has any information that may assist us to contact me/"
     Anyone who can help should contact Stewart Street CID on 0141 532 3116 or Crime stoppers on
0800 555 111 where anonymity can be maintained. 1. What can the man who offers the information about the sex attacker get in reward?A. Appearance on television.
B. Images of some detectives.
C. Money for his action.
D. A scar on the forehead.2. The underlined word in the last paragraph probably means __________.A. a person who is unwilling to offer his or her personal information
B. a person who can make great contributions to certain affairs
C. a person who wants to get rewards and offers help to the police
D. a person who gives away his friend to get a higher position3. Why did Andy Mc William say those words in the last but one paragraph?A. He wished to get help from society.
B. He wanted anyone to have contact with him.
C. He hoped to observe the people watching the TV.
D. He told the society why they were issuing CCTV images.4. What advantage do you have when you phone the number 0800 555 111?A. You can contact Stewart Street CID freely.
B. You can communicate with Crime Stoppers.
C. All your information may be exposed to the public.
D. The public will not know anything about your own information.

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阅读理解。     SAN FRANCISCO - In the western U.S., Hawaii and elsewhere across the globe, moon watchers
were treated Saturday to a rare celestial phenomenon: a total lunar eclipse (月全食).
     For about 50 minutes starting at 6:06 a.m. PST, the moon was completely blocked by the Earth"s
shadow.
     With only some indirect sunlight able to reach it after passing through the Earth"s atmosphere, the
moon took on a reddish glow. Since the atmosphere scatters blue light, only red light strikes the moon,
giving it a dark red color.
     Dally Sam, who runs a public relations firm in Hawaii, said it had been cloudy and rainy, but the
weather cleared just in time for the eclipse.
     Around 3 a.m., he awoke, as he usually does, and remembered to step outside the house in time to
catch the eclipse about a half hour later. No one else in the neighborhood was up.
     "It was turning that dark red color," Sayre, 47, said, "I"d better grab a camera. To be able to see it
just right outside our house was really cool."
     At the local observatory in Los Angeles, some 300 people, many clutching coffee cups in the cold
morning air, sat with blankets and chairs on the observatory"s great lawn.
    "It"s really a celestial festival out here," John Peter, 39, told the Los Angeles Times as he set up his
camera.
     Lying on a slope north of downtown near the Hollywood sign, the place offers clear views of the sky.
Observatory officials alerted the crowd when the eclipse began and spontaneous applause erupted when
the celestial event ended.
     A total lunar eclipse occurs when the moon goes through the long shadow cast by the Earth and is
blocked from the sunlight that brightens it.
     The last total lunar eclipse was on June 15 although that was not visible from the U.S. The next one is
on April 15, 2014, and will be seen in the U.S.1. What do we know about the lunar eclipse from the passage?A. The total lunar eclipse began at about 3:30 a.m.
B. The total lunar eclipse ended at about 6:56 a.m.
C. The lunar eclipse ended at about 6:56 in the evening.
D. The lunar eclipse began at about 6:06 in the evening.2. When a total lunar eclipse occurs, ________.A. the moon looks blue
B. the light will hurt our eyes
C. nothing of the moon can be seen except some dark red light around its place
D. another planet comes between the earth and the moon 3. We can infer from paragraph 5 that at 3:30 a.m. Dally Sam ______.
A. found it was still raining heavily
B. saw a total lunar eclipse
C. went out walking as he usually does
D. still had to wait for a long time to see a total lunar eclipse4. From the last but one paragraph, the following are true EXCEPT _______.A. a total lunar eclipse occurs when the moon is blocked by the sun
B. the source of moonlight is from the sun
C. the earth comes between the moon and the sun
D. with the sunlight, the earth casts its shadow over the moon5. What is the main purpose of the passage? A. To inform us of the next total lunar eclipse.
B. To tell us about a rare celestial event.
C. To alert us of the natural disaster.
D. To draw people"s attention to the news.

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阅读理解。

   Toyota Motor Corp, Japan"s biggest carmaker, said on Friday it will recall 1,489 Lexus sedans
(高级轿车) sold in China. "It will take us some time to ship the fuel tanks and vent pipes to China
to change those in these Lexus sedans for customers free of charge, if problems are found," said
Yang Hongjian, a spokes- woman of Toyota"s China representative office.
    The expected recall will affect Lexus LS430 sedans made in Japan from July 29, 2003 to January
14, 2004, the representative office said in a statement. Toyota has not received complaints from
Chinese customers, according to the statement. The move will be part of Toyota"s global recall of
18,200 Lexus LS430s. It will be the third car recall in China in two weeks. Although automobile
recall is a common practice in developed markets, it remains new to Chinese customers. The Chinese
government published long-awaited automobile recall rules on March 15, which will be officially carried
out at the beginning of October.
   China"s auto market is forecast to reach 10 million units by 2010. Automakers, especially Chinese
producers, will face greater pressure from automobile recalls, which could be very costly sometimes,
and should be in full preparations, according to the expert. The Japanese carmaker sold 1, 549 Lexus
vehicles on the Chinese mainland during the first five months of this year, according to Yang. Lexus
sales on the mainland reached 4,000 units last year, up from 1,600 units in 2002.

1. What can we learn from the text?A. Chinese customers are not satisfied with Toyota Lexus LS430 sedans.
B. Chinese car market has seen car recalls three times so far.
C. Toyota will have a worldwide recall of Lexus LS430 sedans.
D. Toyota Motor start to recall Lexus Sedans due to the problems with fuel tanks.2. The carmakers were unwilling to recall their cars in the past mainly because ______.A. they were not fully prepared
B. they couldn"t afford the cost for their car recalls
C. their products could not meet the required standard
D. there were no related rules and little pressure3. It is implied in the passage that ______.A. sales of homemade automobiles will grow even faster
B. automobile recalls will take place in China more frequently
C. China"s car market is forecast to be the biggest by 2010 in the world
D. Toyota is likely to sell the most Lexus Sedans in China in the future4. Which of the following is the best tide of this passage?A. Toyota to Recall Its Lexus Sedans Sold in China
B. China Prepares to Recall Cars
C. The Problems in China"s Car Market
D. Costly Japanese Car Recalls

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