下列关于牛顿运动定律的描述正确的是（ ）
A．惯性是由物体的速度和质量共同决定的
B．牛顿利用理想斜面实验否定了“力是维持物体运动的原因”
C．牛顿第一定律不是牛顿第二定律的特殊情形，彼此独立
D．一对作用力与反作用力一定是同种性质的力
CD
题目分析：惯性是物体的固有属性，只与物体的质量有关，质量大惯性大与速度无关答案A错。利用理想斜面实验否定了“力是维持物体运动的原因”是伽利略而不是牛顿，答案B错。牛顿第一定律解释了力和运动的关系，而不是牛顿第二定律的特例答案C对。根据牛顿第三定律，一对作用力与反作用力是彼此两个物体之间发生的，施力物体和受力物体交换，同时产生同时消失大小相等方向相反而且是同种性质。答案D对。
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| One day I visited an art museum while waiting for my husband to finish a business meeting. I was expecting a quiet 1 of the splendid artwork. A young 2 viewing the paintings ahead of me 3 nonstop between themselves. I watched them a moment and decided the lady was doing all the talking. I admired the man's 4 for putting up with her 5 stream of words. 6 by their noise, I moved on. I met them several times as I moved 7 the various rooms of art. Each time I heard her continuous flow of words, I moved away 8 . I was standing at the counter of the museum gift shop making a 9 when the couple approached the 10 . Before they left, the man 11 into his pocket and pulled out a white object. He 12 it into a long stick and then 13 his way into the coatroom to get his wife's jacket. "He's a 14 man," the clerk at the counter said. "Most of us would give up if we were blinded at such a young age. During his recovery, he made a promise his life wouldn't change. So, as before, he and his wife come in 15 there is a new art show." "But what does he get out of the art?" I asked. "He can't see." "Can't see! You're 16 . He sees a lot. More than you and I do," the clerk said. "His wife 17 each painting so he can see it in his head." I learned something about patience, 18 and love that day. I saw the patience of a young wife describing paintings to a person without 19 and the courage of a husband who would not 20 blindness to change his life. And I saw the love shared by two people as I watched this couple walk away, their arms intertwined (交缠). | |||
| ( )1. A. touch ( )2. A. lady ( )3. A. chatted ( )4. A. attempt ( )5. A. vivid ( )6. A. Adopted ( )7. A. through ( )8. A. anxiously ( )9. A. comment ( )10. A. entrance ( )11. A. plugged ( )12. A. made ( )13. A. led ( )14. A. brave ( )15. A. wherever ( )16. A. wrong ( )17. A. describes ( )18. A. kindness ( )19. A. support ( )20. A. get | B. view B. man B. argued B. independence B. constant B. Adapted B. to B. urgently B. decision B. exit B. held B. lengthened B. found B. rough B. whatever B. silly B. draws B. pride B. sight B. hope | C. wander C. couple C. screamed C. wisdom C. casual C. Conducted C. towards C. quickly C. purchase C. front C. reached C. brought C. forced C. smart C. whichever C. equal C. shows C. enthusiasm C. expectation C. allow | D. stare D. clerk D. yelled D. patience D. vague D. Disturbed D. from D. sensibly D. profit D. queue D. bent D. broadened D. tapped D. generous D. whenever D. unique D. decorates D. courage D. confidence D. cause |