微孔滤膜在使用之前进行气泡点压力试验，目的是（）
A.气密性检查
B.孔径大小
C.耐压试验
D.滤速测定
E.滤膜弹性测定
参考答案：B
六经病的共同症状是（）
A.腹满
B.水浆不入
C.不知人
D.烦满
E.发热
从A-G中选出能填入空白处的最佳选项补全对话（选项中有两项是多余的）。
A: What bad weather! I don't like the rain.
B: Yes. 1
A: Will it last long?
B: No,it won't. 2
A: How do you know?
B:The radio says 3
A: Oh, 4 I'm going out to play today. Will you come with me!
B: 5 Let's play soccer.
A:OK. Come on.
A．It，s really heavy.
B．It's sunny now.
C. The rain will stop later on.
D. I think it'1l get better soon.
E. It'll be sunny tomorrow.
F.I hope not．
G．Certainly．
1. 2. 3. 4. 5．
