光在不同介质中传播时会发生折射，折射的程度取决于（）。A、时间 B、距离 C、介质的密度 发布时间：2018-10-30 18:32 │ 来源：www.tikuol.com 题型：单项选择题 问题： 光在不同介质中传播时会发生折射，折射的程度取决于（）。A、时间B、距离C、介质的密度D、空间
题型：单项选择题 完形填空。 At one of the school in London, the students can go into town in the afternoon. But they must 1 tothe school before six. One afternoon, Bob went to see a film. When he came back to the school, the school gate had already been closed. He went around the building to 2 door. That one was closed, too. Then hesaw an open window on the 3 floor. It was the 4 office, Bob looked 5 the room, but no one wasin. He quickly 6 into the room. Just then he heard a voice. Bob looked round and hid (躲藏) himself 7 a chair. Then the head teacher came in and sat down on the chair. He read a book for an hour. At last the head teacher stood up and went towards the door. "Thank goodness, he didn't 8 me." Bob thought 9 he left the room, the head teacher spoke to the chair, "Would you please 10 the lights when you leave?" ( )1. A. come ( )2. A. the other( )3. A. first ( )4. A. teacher's( )5. A. at ( )6 A. climbed ( )7. A. behind ( )8. A. see ( )9. A. As soon as( )10. A. turn up B. go B. another B. second B. head teacher's B. out of B. went B. in front of B. hear B. After B. turn on C. return C. small C. third C. door keeper's C. into C. ran C. beside C. catch C. Before C. turn down D. get D. open D. fourth D. students' D. from D. jumped D. under D. find D. When D. turn off 查看答案
题型：单项选择题 关于带状疱疹致病性和免疫性叙述不正确的是（）A.患带状疱疹后终身不再感染B.患病1～4周内局部痛觉非常敏感，有剧痛C.水痘愈后病毒潜伏在脊髓后根神经节或脑感染神经节中D.在皮肤上沿着感觉神经的通路发生串联的水疱疹，形似带状E.病毒沿感觉神经轴索下行到达该神经所支配的皮肤细胞内增殖 查看答案