The Scientific Method
Did you ever wonder why the water level in a glass doesn"t change when the ice in the glass melts
(融化)? To find out why, you can use the scientific method. Used by scientists in various situations, the
scientific method is also a clear and logical way to solve many real-world problems, as the procedure
below indicates.
| Steps in the Scientific Method | Examples | | State the problem or question. | "Why doesn"t the water level in a glass rise when ice melts?" | Collect information about the problem,
using your own observations and
research. | You already know that ice is frozen water. From your research,
you learn that water and ice are made of water molecules (分子). | "Form a hypothesis, or a best guess
based on the information." | The molecules in water appear to be closer together
than they are in ice. | Test the hypothesis by doing an
experiment. | Fill four  glasses with ice. Then pour water over the ice and fill
each glass to the rim. As the ice melts, you observe that the water
does not spill over the top of the glasses. Each time you repeat the
experiment, you get the same results. | | Draw a conclusion based on your results. | Molecules are closer together in water than they are in ice. |
答案
| 1-5: ACADB |
举一反三
| 阅读理解 | A volcanic eruption(喷发) in Iceland has sent ash across northern Europe. Airlines have stopped or
changed the flights across the Atlantic Ocean, leaving hundreds of passengers stuck in the airports.
Grimsvotn is one of the largest and most active volcanoes in Europe. What makes Grimsvotn different
is that it lies under a huge glacier(冰川) of ice up to 12 meters thick. The hot volcano heats up the ice
above it, which then forms a layer(层) of water between the glacier and the volcano.
This layer of water puts pressure on the volcano, keeping it stable(稳定). As the water flows out from
under the glacier, the pressure lifts. The lava(岩浆) from the volcano then comes up to the surface. This
is exactly what happened today.
Now, airlines have to make changes to their flights so as not to fly through the clouds of volcanic ash.
According to KLM one of Europe" s biggest airlines, airplanes cannot go under the cloud or over it.
Going through the cloud can result in ash getting stuck in the airplane" s engines, causing damage to the
plane.
The eruption has also caused problems for animals in Iceland. The volcano left ash and sharp
glass-like rocks all over the countryside. Farmers are keeping their animals inside to stop them from
eating ash-covered glass or the sharp object.
1. What makes Grimsvotn different from other volcanoes?
A. It is below ice.
B. It lies under the sea.
C. It is the largest volcano.
D. Its lava affects the airlines.
2. What keeps Grimsvotn stable?
A. The slow flow of water.
B. The low water temperature.
C. The thick glacier.
D. The water p ressure.
3. Which of the following is the result of the volcanic eruption?
A. People stop traveling in Europe.
B. Airlines suffer from the loss of planes.
C. It becomes dangerous for animals to eat outside.
D. Farmers have lost many of their animals.
4. This text is most probably taken from____
A. a research paper
B. a newspaper report
C. a class presentation
D. a geography textbook | | 阅读理解 | King"s College Summer School is an annual (每年的) training program for high school students at all levels who want to improve their English. Courses are given by the teachers of King"s College and other colleges in New York. Trips to museums and culture centers are also organized. This year"s summer school will be from July 25 to August 15.
More information is as follows:
Application (申请)date
* Students in New York should send their applications before July 18, 2007.
* Students of other cities should send their applications before July 16, 2007.
* Foreign students should send their applications before July 10, 2007. | Courses
* English Language Spoken English: 22
hours Reading and Writing: 10 hours
* American History: 16 hours
* American Culture: 16 hours
| Steps
* A letter of self-introduction
* A letter of recommendation(推荐)
* The letters should be written in English with all the necessary information.
| Cost
* Daily lessons: $200
* Sports and activities: $100
* Travels: $200
* Hotel service: $400
* You may choose to live with your friends or relatives in the same city. | Please wr ite to:
Thompson, Sanders
1026 King"s Street
New York, NY 10016, USA
E-mail: KC-Summer-School@ yahoo, com | | 阅读理解 | 根据短文内容,从短文后的选项中选出能填入空白处的最佳选项.选项中有两项为多余选项.
Getting your children to study can be a little like getting them to eat their vegetables.
1 Make a study time and have it at the same time every day. This will help your kids to learn to
schedule their day and will give them a sense of control over how they spend their time.
Allow them to study in blocks of time, such as for half an hour with a five-minute break in the middle.
2 Ideal(理想的) study times are after dinner or right after school before dinner.
Never allow your children to study in front of the television, as that will encourage passive(被动的)
activity. 3 .
You" ll also need to help your kids find the right place to study. After you" ve set up a good study time
for little learners, set up a good place where they can get those creative juices flowing.
4 Make sure there is a table or a desk and a comfortable chair.
5 This includes helping them out with their homework sometimes and being there for them with
the answers to any questions. The input you give your children during study periods will help form a
bond and help make studying enjoyable.
A. Pick a place where your children can study properly.
 B. Hold them to the schedule they create for themselves.
C. Finally, spend time with your kids when they"re studying.
D. Keep the atmosphere light and offer lots of encouragement, too.
E. Instead, use TV as a treat or a reward when the homework is completed.
F. Try to stop th is bad habit by offering some sort of reward.
G. One of the best ways to form good study habits for your kids is to design a schedule that they keep to. | | 阅读理解 | Interview with a president
While many teenagers may dream of meeting with pop star Jay Chou or NBA hero Yao Ming, Li Jing
had a far more powerful person on her mind. The Senior 2 from Beijing No.35 High School dreamt of
meeting Russian President Vladimir Putin.
After more than a year of hard work and with a little good luck, Li fulfilled her dream. On October
11, 2004, the 16-year-old girl joined a team of Chinese journalists who went to the Kremlin, in Moscow,
to interview Putin.
Li felt nervous before talking with Putin. "But his greeting and warm smile put me at ease," she said.
Li admires Putin very much, because of his strong will and style of leadership. "He looks very cool,"
Li said. During her interview, Li asked Putin whether he plans to educate his two teenage daughters to be
officials in the future. Putin smiled and answered he hopes they can do whatever job suits their interests
and personalities.
Although Li would only have several minutes, she started working on her interview questions last
August after applying for the opportunity. "Journalists work is by no means easy. You need to do lots
of homework on your interviewee," she said. She read many books about Putin and Russia in her spare
time.?
Li"s parents encouraged her to be a student journalist. "We fully support her, as long as it does not
affect her studies," said her father. Previously in her job for a student magazine, Chinese Young
Journalists, she wrote a letter to President Hu Jintao during the SARS epidemic.
Li has learnt a lot from her experience. She said learning to manage her time and developing the
confidence to speak with important people were not the things she could learn in class.?
1. The underlined word "interviewee" in the fifth paragraph probably means ______.
A. the person who interviews?
B. the person who is interviewed?
C. the person who know how to interview?
D. the person who plan to interview a famous people?
2. Which of the following best describes Li Jing"s parents" attitude towards her being a student journalist?
A. They think to be a student journalist is purely a waste of time.?
B. They worry that to be a student journalist will affect her studies.?
C. They consider it is quite good for Li Jing on the condition of not striking her study.?
D. They neither support it nor object to it.?
3. Li Jing is different from those students of her age in that ________.
A. she doesn"t like pop star Jay Chou?
B. she hates meeting with the NBA hero Yao Ming?
C. she wants to meet neither Jay Chou nor Yao Ming?
D. she dreams of meeting the present powerful Russian leader?
4. Which of the following statements is NOT TRUE?
A. Li realized her dream just because of her hard work.?
B. Li was at ease at the first sight of president Putin.?
C. Li considers Putin a great leader because of his strong will and style of leadership.
D. Li thinks it impossible to learn in class the confidence to speak with great people. | | 阅读理解 | In order to know a foreign language thoroughly(完全地), four things are necessary. First, we must
understand the language when we hear it spoken. Secondly, we must be able to speak it ourselves,
correctly with confidence(自信) and without hesitation(犹豫). Thirdly, we must be able to write it. We
must be able to make sentences that are correct in grammar.
There is no short way to succeed in language learning. A good memory(记忆) is a great help, but it is
not enough only to memorize the rules from a grammar book. It is no much use learning by heart long lists(一览表) of words and their meanings, studying the dictionary and so on. We must learn by using the
language. If we are pleased with a few rules we have memorized, we are not really learning the language. We must "Learn through use". Practice is important. We must practise speaking and writing the language whenever(无论何时) we can.
1. The most important things to learn a foreign language are_______.
A. understanding and speaking
B. hearing, speaking, reading and writing
C. writing and understanding
D. memorizing and listening
2. Someone hears and writes English very well, but he speaks it very badly. This is because____.
A. he doesn"t understand the language when he hears it spoken
B. he doesn"t have a good memory
C. he always remember lists of words and their meanings
D. he often hesitates to practise speaking it
3. One can never learn a foreign language well only by_______.
A. much practice
B. studying the dictionary
C. learning through use
D. using the language
4. Which of the following is the most important in learning a foreign language?
A. A good memory.
B. Speaking and writing.
C. Practice.
D. Writing.
5."Learn through use" means______.
A. we use a language in order to learn it
B. we learn a foreign language in order to use it
C. we can learn a language well while we are using it
D. both B and C |
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