营养不良使肺表面活性物质战少易发生()等,并影响疾病的预后。
A.肺黏膜修复不良
B.肺萎缩
C.肺水肿
D.气胸
E.肺癌
参考答案:A, B, C
单词拼写
1. How much is the air f_____to London?
2. All their goods will be t_____abroad by ship.
3. We tried to p_______him out of his foolish plan.
4. He took a positive a______towards his job.
5. Their dispute has not been_______(彻底地) settled yet.
6. The boss____(坚持)on going there by himself.
7. He______(毕业)from the school of cookery last year.
8. The plane flew at an____(海拔,高度)of 350 feet.
9. The project is completed ahead of_______(时间表), so we will have five days off.
10. It's a day's____(行程)by car.
泄水管应采用PVC材料,其性能应符合()的要求。