丝裂霉素的抗癌作用机理是:
A.阻碍DNA合成B.与DNA联结而破坏其结构C.与DNA结合而阻碍RNA转录D.阻碍纺锤丝形成E.阻碍蛋白质合成
参考答案:B
Read and order. 把杂乱的句子排列成通顺的一段话。
1. I put on my clothes.
2. In the afternoon, I eat lunch at school.
3. Then I walk home. I eat supper with my parents.
4. Then I do my homework after supper.
5. Today is Monday. I get up early in the morning.
6. I finish school at four in the afternoon.
7. I eat breakfast and then I go to school.
8. Later, I lie on my bed.
顺序:(5) ( ) ( ) ( ) (6) ( ) ( ) (8)
虹膜睫状体挫伤可引起()
A.调节异常
B.外伤性散瞳
C.前房角后退
D.外伤性虹膜睫状体炎
E.虹膜根部离断