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— _____________
— Thank you. I'll try my best.
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A. She wished herself home
B. Best wishes to you
C. I wish you success
D. I wish you well
查看习题详情和答案>>Annealing
Annealing is a way of making metal softer by heating it and then letting it cool very slowly, if metal is heated and then cooled very quickly, for example by dipping(浸) it in water, it will be very hard but also very brittle(脆)—that is, it will break easily. Metal that has been annealed is soft but does not breaks as easily. It is possible to make metal as hard or as soft as is wished, by annealing it. The metal is heated, and allowed to cool slowly for a certain length of time. The longer the heated metal takes to cool slowly, the softer it becomes. Annealing can also be used on other material, such as glass.
1. Annealing can make metal ____
A. hard and tough(韧) B. hard but brittle C. soft but tough D. soft and brittle
2. Why do people put hot metal in water?
A. To make it hard. B. To make it soft. C. To make it cool. D. To make it brittle
3. In annealing, the required hardness of a metal depends on ______
A. the quantity of water used B. the temperature of the metal
C. the softness of the metal D. the timing of the operation
4. As suggested by the text, how can glass be made less brittle?
A. It can be heated and then cooled quickly.
B. It can be cooled and then heated slowly.
C. It can be heated and then cooled slowly.
D. It can be cooled and then heated quickly.
查看习题详情和答案>>阅读下面短文，掌握其大意，然后从各题所给的四个选项中，选出一个最佳答案。
A certain student passed all his school examinations and then went to a college to continue his studies. There he put his name 1 for a course in geography, but after the first lecture, he did not go to it 2 .The geography lecturer noticed that this student was always absent and thought that he had 3 to another course, so he was very 4 when he was the boy's name on the 5 of students who wanted to 6 the geography examination at the end of the year.
The lecturer had prepared a difficult examination paper, 7 followed his lecture very closely, and he was 8 to see 9 the boy's answers 10 the questions would be. He 11 that they would he very bad, but when he examined the paper 12 , he was able to find only one small mistake 13 it. As this surprised him very much, he went 14 the paper once again, but was 15 not able to find more 16 that one small mistake, so he 17 for the student to question him about his work.
When the student had come into the room and had sat down, the lecturer said to him, “I know that you came only to my first lecture and that you have been absent 18 all the others; but now I have examined your answer paper throughly and I have been able to find only one small mistake, I am 19 to know your explanation for that.”
“Oh, I am very sorry about that mistake, sir ”answered the student.“After the examination, I realized what I ought to have written. I 20 that mistake if I had not been confused(混淆)by your first lecture.”
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短文改错：
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Robson was born in a very poor black family. |
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At seven he had to pick coal, then he sold that |
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he had picked and got any money to help his parents |
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support the family. He had no schooling, for being |
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so poor, how could they give him to school? |
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When he was fifteen, he worked like a servant |
4．________ |
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in a school. Looked at other children study in the |
5．________ |
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classroom, he felt sorry for him. How he wished |
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to have the same chance! He decided to study by |
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himself. In the daytime, after the sweeping and the |
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cleaning was over, he would stand by the window |
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outside the classroom. He tried to catch what the |
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teacher said. At night, he tried best to remember |
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what that he had learned during the day. He worked so hard |
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at the lesson that he sometimes had just three or four hours' sleep. |
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The human nose has given to the language often word many interesting expressions. Of course, this is 1 Without the nose, we couldn't 2 or smell. It is the part of the face that gives a person special 3 . Cyrano do Bergerac said that 4 large nose showed 5 man courageous, manly and wise.
A famous woman poet 6 that she had two noses 7 a rose! Blaise Pascal made an 8 remark about Cleopatra' s nose (Cleopatra 为古埃及最后一位女王). If it had been shorter, he said, it would have changed the whole face of the world！
Man's nose 9 an important role (作用) in his imagination. Man has referred to the nose in 10 ways to express his emotions. Expressions dealing with the nose refer to human 11 ; anger, pride, jealousy (嫉妒) and revenge (报复).
In English there are a number of phrases 12 the nose. For example, to hold up one's nose expresses a basic human feeling——pride. People 13 hold up their noses at people, things and places.
The phrase, 14 around by the nose, shows man' s weakness. A person 15 is led around by the nose lets other people 16 him. On the other hand, a person who 17 his nose lets his instinct (本能)——guide 18
There are a number of others 19 . It should be 20 the nose on your face that the nose is more than an organ (器官) for breathing and smelling.
1. A. not surprising B. surprising C. not surprised D. surprised
2. A. breath B. breathe C. taste D. watch
3. A. feeling B. character C. things D. love
4. A. the B. this C. one D. a
5. A. big B. large C. great D. brave
6. A. wished B. said C. hoped D. expected
7. A. to feel B. to see C. to touch D. to smell
8. A. encouraging B. interesting C. moving D. exciting
9. A. has had B. had had C. had D. will have
10. A. much B. few C. many D. some
11. A. illness B. strength C. courage D. weakness
12. A. with B. of C. by D. about
13. A. must B. can C. need D. should
14. A. to lead B. leading C. to be led D. lead
15. A. which B. whom C. who D. whose
16. A. protect B. control C. remember D. hate
17. A. follows B. leads C. drives D. makes
18. A. himself B. him C. one D. man
19. A. otherwise B. thus C. so D. however
20. A. so plain as B. as plain as C. as clearly as D. not as plain as
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