长期摄入,能表现出原浆毒作用,干扰组织代谢及引起皮肤损害的重金属是()
A.汞
B.铁
C.砷
D.铜
E.铅
参考答案:C
句型转换。
1. May I smoke here? (否定回答)
No, .
2. Look! There is some milk in the glass. (改为否定句)
Look! There milk in the glass.
3. This bag is made of leather. (提问)
this bag ?
4. How do you like the film? (同义句)
do you the film?
5. It's not polite of you to come in. You don't knock on the door. (合并为一句)
It's not polite of you to come in on the door.
6. My mother watches two hours of TV every night. (提问)
does your mother watch every night?
7. How beautiful the flowers are! (同义句)
they are!
8. Daniel runs on the playground every morning. (用now改写)
Daniel on the playground now.
盆景为什么要浇困水?