Want a good night"s sleep? Then turn off your computer, cell phone or PSP two ho
题型：不详难度：来源：
Want a good night"s sleep? Then turn off your computer, cell phone or PSP two hours before you go to bed.
These things have bright lights. When our eyes see bright lights just before sleep, our sleep patterns (模式) change, a study has found.
Our body clock starts shutting us down for bed at 9 or 10 pm. But bright lights make our minds think that it is still daytime. That wakes us up and leaves us sleepless, experts say.
But if you read a paper book before sleeping, you won"t have this problem. This is because light from a bedside lamp (台灯) does not go straight into our eyes.
Also, if you are watching a television from across the bedroom, you won"t have problems falling asleep. The TV sends light to us from a distance, so the light won"t be as strong.
小题1:The writer tells us to turn off the computer before bed time.| A．half an hour | B．an hour | C．two hours | D．three hours |
小题2:Which of the following may make us sleepless?| A．Reading a newspaper. | B．Talking on QQ. | | C．Reading a book. | D．Watching TV. |
小题3:Why can"t we sleep well if we use a computer before bed time?| A．We think it is daytime if we leave computers on. | | B．We feel too excited to sleep after using computers. | | C．Lights from computers are brighter than other lights. | | D．Lights from computers can change our sleep patterns. |
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答案
小题1:C
小题2:B
小题3:D |
解析
小题1:根据文章内容Want a good night"s sleep? Then turn off your computer, cell phone or PSP two hours before you go to bed.可知答案为C
小题2:根据文章内容Our body clock starts shutting us down for bed at 9 or 10 pm. But bright lights make our minds think that it is still daytime. That wakes us up and leaves us sleepless, experts say.可知答案：为B
小题3:根据文章内容大意可知答案为D. |
举一反三
The sea looks very beautiful when the sun is shining on it. But it can be very terrible when there is a strong wind. The sea is very big. It covers three quarters of the earth. The sea is also very deep in some places. In one place, the sea is about 11 kilometres deep. The highest mountain(山) in the world is about nine kilornetres high. If that mountain was put into the sea at that place, there would still be two kilometres of water above it!
In most parts of the sea,there are plenty of fishes and plants (植物). Some live near the top of the sea.Others live deep down. There are also a lot of small living things,and lots of fish live by eating them. The sea can be very cold. When people go down, the sea becomes colder and colder. Only some men can go down into the deep sea. But,in 1970,five women scientists lived in the deep sea for fourteen days.
小题1:This writing is ________.| A．a short story | B．about the sea | | C．a news report | D．a poem |
小题2:Which of the following is NOT true?| A．The sea is usually very beautiful when it is sunny. | | B．The sea is very terrible when the wind blows hard. | | C．The highest mountain is in the deepest place of the sea. | | D．The deeper the people go into the sea, the colder they would feel there. |
小题3:The sea covers _________of the earth.小题4:There are a lot of small living things in the sea,and_______.| A．they live by eating fish | B．they live to eat apples | | C．they are good food for fish | D．they are too small for fish to catch |
小题5:In 1970,five women lived in the deep sea for 14 days. That showed_______.| A．not only men can go down into the deep sea | | B．women wanted to swim in the sea | | C．women could go deeper into the sea than men | | D．women liked living in the sea |
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Dolphins are not fish. They are mammals (哺乳动物).They live in groups and speak to each other in their own language. But they are quite different from almost all land animals. Their brain(大脑)is as big as men"s and they live a long life at least 20 or 30 years.
Like some animals, dolphins use sounds to help them find their way around. They also use these sounds to talk to each other and to help them find food. They do not use their ears to receive sounds,but use the jaw--the lower part of the mouth.
It is strange that dolphins are friendly to men, and for thousands of years, there are many stories about dolphins and men. In the 19th century, in a dangerous part of the sea near New Zealand,there was a dolphin. The seamen liked him very much and gave him a very good name, Jack. From 1871 to 1903 ,Jack met every boat in the area and showed it the way. In 1903 a passenger on a boat with the name of The Penguin shot and hurt Jack. Luckily the dolphin didn"t die, and after a long time he was well again. He guided the ships through the area for nine more years, but he refused to help the boat of the Penguin.
Today, some people still kill dolphins, but many countries in the world now protect them. In these places, people are not allowed to kill them.
小题1:The word "jaw" means_________in Chinese.小题2:How do dolphins find their way?| A．They use their noses to smell the way. | | B．They use their ears to hear the sounds. | | C．They use their eyes to see the way. | | D．They use sounds to find the way. |
小题3:Who was Jack?| A．The writer. | B．A dolphin. | C．A seaman. | D．The passenger. |
小题4:The dolphin guided the ships for about________.| A．32 years | B．9 years | C．41 years | D．23 years |
小题5:According to the passage, which of the following is NOT right?| A．Dolphins are not fish. | | B．Dolphins don"t live in groups. | | C．Dolphins are kind and friendly to people. | | D．Dolphins can live a long life. |
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Everyone (人人)needs to be healthy.
Do you eat healthy food every day? It’s important (重要)for your health. You need fruit, like oranges, apples and bananas. “ An apple a day can keep away（避开） the doctor (医生).” You also need vegetables, like carrots and broccoli. Fruit and vegetables are good for our health. But don’t eat lots of chocolate. It’s not good healthy food. What about dessert? Don’t eat lots of dessert because it’s not good for your health. Many people eat lots of chocolate and dessert, so they are unhealthy. Sports can also keep you healthy. Play sports every day. Don’t be lazy. You can be healthy.
小题1:What are healthy food?| A．Fruit and vegetables. | B．Bananas, apples and chocolate. | | C．Fruit and dessert. | D．Vegetables and dessert. |
小题2:What keeps you healthy?| A．Food. | B．Sports. | C．Healthy food. | D．Healthy food and sports. |
小题3:文中划线句子“ An apple a day can keep away the doctor”的意思是________. | A．The doctor doesn’t like an apple. | | B．You don’t need a doctor. | | C．You bring an apple to the doctor and he runs away（跑走）. | | D．You eat an apple a day and you can be healthy. |
小题4:猜测文中划线单词unhealthy的意思:________.小题5:Which is Right? (哪一项是正确的？)| A．Everyone is healthy. | B．We need to be healthy. | | C．Food isn’t important. | D．A doctor is important. |
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Can you imagine astronauts" everyday life in space? They also need to eat, sleep, exercise and relax. They do the same things as us, but they do them differently.
On Earth, we put food on a plate. Gravity holds the food down and keeps it on a place. But there is almost no gravity in space, so food can float （漂浮）away, and astronauts must eat carefully.
Sleeping is very different in space. Some astronauts like to float in the air, but most like to be in a sleeping bag. They tie the bag to a wall so that they won"t float away at night.
Exercise is very important in space. On Earth, your legs carry your body, but in space, astronauts float, so they do not use their legs often. This is very bad for their legs, so they must exercise for thirty minutes every day.
After a day"s work, astronauts relax. They may listen to music, read, watch films, play games, or talk to their friends and families on the radio. Sometimes they just enjoy floating in the air.
小题1:What does the underlined word "gravity" mean in Chinese?小题2:Why do astronauts tie the sleeping bag to a wall?| A．Because in that way they won"t float away. | | B．Because that makes them sleep well. | | C．Because they can"t get to sleep if they don"t do that. | | D．Because the sleeping bag is not safe enough. |
小题3:What"s the main idea of the passage?| A．It is about the importance of gravity. | | B．It is about astronauts" everyday life in space. | | C．It is about the differences between space and Earth. | | D．It is about how to avoid （避免） floating away while sleeping. |
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Scientists (科学家) think that many animals cannot see colours. The world is black and white to them. Scientists want to find out if (是否) dogs can see colours. When the scientists give the dogs food, they show them a certain colour every time. The dogs get ready to eat when they see this colour. The scientists then show the dogs another colour. Again the dogs get ready to eat. The colours are all the same to them.
Colours are not all the same to monkeys. For example, if we put food in a red box, and do this every day, a monkey will always go to the red box to get food. If we put food in a blue box, the monkey won’t go to it.
小题1:Scientists show the dogs colours ____________. | A．to tell them to eat | | B．to find out if they can see black and white things | | C．for fun | | D．to find out if they can see colours |
小题2:The dogs get ready to eat when they ____________. | A．hear different pieces of music | B．see the monkeys | | C．see black things | D．see all the colours |
小题3:Colours are _____________. | A．all the same to monkeys | B．not all the same to dogs | | C．different to dogs | D．not all the same to monkeys |
小题4:If we put food in a blue box and do this every day, a monkey will always go to ____________.| A．the red box to get food | B．the blue box and put food in it | | C．the blue box to get food | D．the red box and put food in it |
小题5:Which of the following is TRUE?| A．Scientists find that dogs don’t like colours. | | B．Dogs like to hear different pieces of music. | | C．Monkeys like the food in the box. | | D．Monkeys will not go to the blue box if we don’t show them before. |
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