已知某玻璃对蓝光的折射率比对红光的折射率大，则两种光[ ] A._爱下问搜题

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已知某玻璃对蓝光的折射率比对红光的折射率大，则两种光[ ]

A.在该玻璃中传播时，蓝光的速度较大

B.以相同的入射角从空气斜射入该玻璃中，蓝光折射角较大

C.从该玻璃中射入空气发生反射时，红光临界角较大

D.用同一装置进行双缝干涉实验，蓝光的相邻条纹间距较大

答案

答案：C

完形填空

阅读下面短文，掌握其大意，然后从41-60各题所给的四个选项（A、B、C和D）中，选出最佳选项。
I will never forget that night, when I pulled into my drivewayafter a busy day of school and baby-sitting. I still      to write a physics paper, which must be handed in the next day. There were many things on my mind. At that time I was having many problems with my family and friends,      I was in a very bad mood (心情). And I was unhappy with      and the way that my life was going. A major      I was struggling with was drug (毒品) use. For two years I had been smoking marijuana (大麻) and got used to it,     could not stop. I did not let drugs affect my grades or personality, but it made a (n)      in how I thought about myself. I had always been a good kid and still tried to be, but drugs brought me     . I frequently thought about     drugs were not something I wanted as part of my life. I wanted to   but I was frightened to make it.
I looked up at the sky as I got out of my     . The moon gave off tiny beams of light. The sky was a dark, ink-black colour      millions of stars. I stood outside in the cool fall air for what seemed a long time of heaven and     . The joy that I had not      for ages came upon me. I closed my eyes to decide if this dream could be     . I slowly opened my eyes and caught a shooting star (流星) flying over treetops. Tears fell from my eyes and streamed down my cheeks. I had     the true beauty of nature. Those few      helped me find the    to change.
It is not easy to make the decision to stop using drugs. It is even harder to stop     . Giving it up has given me hope and a reason to be      myself. It has helped me grow      and more mature (成熟).

B．my homework

A．crazy about

多项选择题

下列因素中，用来评价训练负荷强度的因素是（）

A.速度

B.高度

C.次数

D.密度