题目

关于向心加速度的物理意义，下列说法中正确的是 (   ) A．它描述的是线速度方向变化的快慢   B．它描述的是线速度大小变化的快慢 C．它描述的是向心力变化的快慢       D．它描述的是角速度变化的快慢 答案：A　　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