问题
单项选择题
用某中草药预防流感。其用药组与对照组的流感发病率情况如下表，则构成四格的四个基本数据是中草药预防流感效果研究（）
A.
B.
C.
D.
E.
答案
参考答案：D
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用某中草药预防流感。其用药组与对照组的流感发病率情况如下表，则构成四格的四个基本数据是中草药预防流感效果研究（）
A.
B.
C.
D.
E.
参考答案：D
| 完形填空。 | |||
| My name is Lucy. I'm a __1__ . I'm American. I'm at school now. My teacher is a __2__ . Her name is Wang Pei. She is an __3__ teacher. David is my friend. He is English. He is fourteen. David and I __4__ in Class 3, Grade1. I am in Number I in Row 2. He is in the same row. His English is __5__. He has (有) a parrot. Its name is Polly. | |||
| ( )1. A. man ( )2. A. boy ( )3. A. Japanese ( )4. A. are ( )5. A. well | B. woman B. man B. English B. am B. OK | C. girl C. English C. Chinese C. is C. good | D. boy D. woman D. good D. be D. fine |
