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问题 单项选择题

关于尿路结石，以下哪项是不正确的

A．我国南方发病率明显高于北方

B．男女之比为3:1

C．上尿路结石大多数是草酸钙结石

D．膀胱结石中磷酸镁胺结石较上尿路多见

E．下尿路结石较上尿路结石多见

答案

参考答案：E

填空题

用所给动词的适当形式填空。

1. I ______ (talk) to some friends yesterday afternoon.

2. My mother didn't _______ (walk) in the park yesterday.

3. Did you ______ (play) table tennis last weekend?

4. —What did you do last night?

    —I ______ (watch) TV.

5. Did you ______ (cook) fish yesterday?

6. Dad ______ (walk) in the park yesterday.
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单项选择题 A1型题

水提醇沉时要除去淀粉等杂质，料液中乙醇浓度需达到（）

A.30%

B.40%～50%

C.50%～60%

D.40%

E.75%
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