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问题 选择题

_________ with the work,she sat down to have a break.     [ ]

A. To tire  

B. Tire            

C. Being tired    

D. Tired

答案

答案：D

阅读理解

Look at the photo of my family. The man in black is my father. The woman(女人) in green is my mother. They are teachers. My father is an English teacher, and my mother is a math(数学) teacher.

The girl in a yellow skirt is my sister. She is eight. I am twelve. I am a student. My name is Lin Like. You can see me. I’m in a white shirt in the photo.

根据短文内容，选择正确答案（10分）

小题1:There are        people in the photo.

A、3                  B、4                  C、5

小题2:Lin Like’s mother is       .

A、in red              B、in green            C、in black

小题3:Lin Like’s sister is       .

A、eight               B、five                C、nine

小题4:Lin Like is        .

A、in a red coat

B、a student

C、a teacher

小题5:Lin Like’s father and mother      .

A、are teachers

B、are doctors

C、are in red
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单项选择题

正态分布的数字特征是μ和δ，它们分别决定了分布曲线的（）。

A.位置和陡坡

B.斜率和高度

C.斜率和范围

D.位置和形态
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