造成镰刀形红细胞贫血的基因突变原因是（） A.DNA重排 B.碱基缺失 C.碱基插入

Mary is twenty-three years old. She is a nurse at a big hospital. She is very kind, and all of her patients like her very much.

One day she was out shopping when she saw an old woman waiting to cross a busy street. Mary wanted to cross the street, too, so she went over to help the woman cross. When Mary was near her, she shouted happily, “Mrs Herman! You were my patient last year.” “Oh, thank you very much, Mary,” Mrs Herman said, and stepped forward. “No, no, Mrs Herman,” Mary said quickly, “the light’s still red.”“Oh,” Mrs Herman answered as she stepped back. “I can easily cross the street alone when the light’s green.”

小题1:Mary is a young         .

A．doctor

B．nurse

C．teacher

D．farmer小题2: Why do Mary’s patients like her a lot?        .

A．Because she is very had

B．Because she is serious

C．Because she is very kind

D．Because she is their aunt小题3:Mary_______________ before she met her in the street.

A．knew Mrs Herman

B．didn’t know Mrs Herman

C．lived with Mrs Herman

D．didn’t see Mrs Herman小题4:Mary told Mrs Herman         .

A．to cross the street until the light was red

B．not to cross the street until the light was red

C．to cross the street until the light was green

D．not to cross the street until the light was green小题5:How many people in all are there in the passage?

A．One.

B．Two.

C．Three.

D．Four.

下列哪种板卡不属于控制箱里的板卡。（）

A、测温板

B、磁头板

C、AD采集板

D、温控板

Excel中公式“=SUM(B2，B4，B6，B8)”的含义是计算指定的四个单元数据的和。

扣缴义务人应扣未扣的税款，税务机关应向（）追缴。

A、扣缴义务人

B、纳税人

C、由扣缴义务人与纳税人双方协商确定

D、扣缴义务人和纳税人各按50%

清燥救肺汤的功效是（）

A.滋阴润肺

B.滋养肺胃

C.清燥润肺

D.清热润肺

E.轻宣燥热