跟蹤導練（一）4

閱讀理解

A

Once Wilhelm K. Roentgen and several other scientists were experimenting with passing electric currents through certain gases in a special glass tube （管子） from which the air had been taken away. Then one day Roentgen noticed that though the tube was covered with black paper， some strange kind of radiation were coming through and making a screen nearby give out light. Roentgen could see nothing out of the tube. But then he discovered that if he put the screen in the next room on the other side of the closed door， the rays still seemed to affect it. The screen showed that the rays could pass not only through the black paper but also through wood.

The next thing he found out was that if he put his hands between the rays and a photographic plate， the rays would print a shadow of the bone framework （骨架） of his hands on the plate. In fact， the rays could pass as easily through the fleshy （肉的） part of his hand as through the black paper， but hardly at all through the bone. So Roentgen made the first X-ray picture of a hand showing just how the bones in the hand fitted together.

Roentgen called these unknown rays X-rays， but other scientists called them Roentgen rays in honor of the man who first found them.

1. What was in the special glass tube？

A. Air. B. Water.

C. Gases. D. Paper.

2. According to this passage， Roentgen discovered X-rays ___ .

A. by accident

B. by working hard

C. by doing lots of experiments

D. with the help of several other scientists

3. What can X-rays hardly pass through？

A. Wood. B. Bones.

C. Flesh. D. Black paper.

4. Whats the best title of the passage？

A. The Discovery of X-Rays

B. The First X-ray Picture of A Hand

C. The Discovery of Electric Currents

D. The Use of Rays and Photographic Plates

B

In the past ten years， many scientists have studied the differences between men and women. And they all got the same answer： The sexes （性別） are different， because their brains are different. And this， the scientists say， makes men and women see the world in different ways.

Boys， for example， generally are better than girls at mathematical ideas. Boys also generally are better than girls at the kind of hand and eye movements necessary for ball sports. Girls， on the other hand generally start speaking earlier than boys. And they generally see better in the dark than boys and are better at learning foreign languages.

What makes men and women better at one thing or another？ The answer is the brain. The brain has two sides connected by nerve （神經） tracks. The left side generally is used for mathematics， speech and writing. The right side is used for artistic creation and the expression for emotions. In men and women， different areas in each side of the brain develop differently. In boys， for example， its the area used for mathematics. In girls， it is the area used for language skills. Another interesting difference is that the two sides of a mans brain are connected by a smaller nerves than the two sides of a womans brain are.

5. What makes men and women think differently？

A. The influences of sex.

B. The different brains.

C. The different experiences.

D. The influences of society.

6. The girl students are generally better than boys in learing ___ .

A. physics B. chemistry

C. mathematics D. foreign languages

7. What is the left side of the brain used for？

A. Speech and writing.

B. Writing and language skills.

C. Speech and artistic creation.

D. Mathematics and emtional expression.

8. Which of the following is the best title？

A. Research on the Brain

B. Peoples Different Brains

C. Who Are Better， Boys or Girls

D. Differences Between Men and Women

選詞填空

用方框里單詞的正確形式填空，使其句意完整。每空一詞，有兩個詞是多余的。

educate nickname publish convert producer

agriculture figure producer staple biology

1. Billy has a degree in ____ .

2. Better methods of ____ are needed to feed the worlds population.

3. A（n） ____ in a blue dress appeared in the doorway.

4. The ____ of anything， that is， the person who makes or grows it， should be responsible for it.

5. You should ____ your children to behave well.

6. Rice is the ____ food of half the worlds population.

7. Her profession is collecting information and ____ it.

8. A television set ____ electric energy into sound and light energy.

句子翻譯

1. 科學種田是農業發展的關鍵。

2. 由于他愚蠢的行為，他失去了所有的朋友。

3. 比爾出生在加拿大，但在美國長大。

4. 我可以說世界上沒有什么東西可以取代母親的愛和關心。