周围型肺癌的X线表现为（） A.圆形或类圆形病灶 B.病灶密度高而均匀，边界清楚

6789是一个四位数。[ ]

根据句意及首字母提示，补全下列单词。

1. —How’s the weather in Hefei in winter?

    —It’s c________.

2. I can’t dance but I can s__________.

3. What’s the weather like in Shanghai in a                ? It’s cool.

4. —Do you like watching t                ? 

    — Yes, very much.

5. A pianist(钢琴家) can play the _________ very well.

6. I can                  a bike.

7. I need a secretary(秘书). Can you t                 ?

8. Dick can't p              basketball(篮球).

9. He likes l              to music.

10. He can speak Chinese, but he can’t w               it.

注射用抗生素粉针分装空气洁净度为

A．万级
B．百级
C．A、C均不可
D．＞1万级
E．A、C均可

在构造图上，构造等高线封闭的构造单元是（）和（）。