纤维性骨痂在骨折后的形成时间是()。
A.2~3天
B.5~7天
C.7~14天
D.4~5周
E.2~3个月
参考答案:A
按要求改写句子。
1. Tom is playing the gitar. (就画线部分提问)
_____ _______Tom_______?
2. My grandfather is reading the newspaper. (改为否定句)
My grandfather______ ______ the newspaper.
3. She is visiting Hong Kong. (改为一般疑问句)
_______ she _____Hong Kong?
4. They run every morning. (用now改写句子) They____ _____now.
5. Are they playing basketball?(作否定回答) ________, they_________.
下列有关青霉胺的说法不正确的是
A.为青霉素的代谢产物,系含有巯基的氨基酸
B.对铜、汞、铅等重金属离子有较强的络合作用,性稳定、溶解度高
C.用药后,可使尿铜排出增加5~20倍,症状也可改善
D.对铅、汞中毒亦有解毒作用
E.使用前不必进行试敏