装卸危险化学品使用的工具应能防止( )。
A.折断
B.坠落
C.锈蚀
D.产生火花
参考答案:D
解析: 装卸危险化学品使用的工具应能防止产生火花。
动词填空。
1. Everyone in his class _____ (fly) kites every Sunday.
2. Tom, _____ (not feed) the birds here.
3. What time _____ Lucy and Lily often _____ (have) supper?
4. What about _____ (put) the books on the desk?
5. At the weekend Mother often goes to the supermarket _____ (buy) something
to eat.
6. Simon often helps his father _____ (clean) his car in the afternoon.
7. He mustn't _____ (cross) the road when the light is red.
8. Thanks for _____ (tell) me about your new school.
9. Why not _____ (walk) your dog in the park this afternoon?
10. My best friend John enjoys _____ (run) very much.
蛛网膜下腔出血时,出现一侧上睑下垂时,其动脉瘤的部位可能在
A.大脑中动脉B.前交通动脉C.后交通动脉D.基底动脉E.眼动脉