在距钢轨顶面350～1100mm这个高度范围内，直线建筑限界的半宽是

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问题单项选择题

在距钢轨顶面350～1100mm这个高度范围内，直线建筑限界的半宽是（）。

A.1400mm

B.1500mm

C.1725mm

D.1875mm

答案

参考答案：D

阅读理解

阅读短文，根据短文内容，选择正确的答案。

This is my friend's family. She lives in Canada. Her name is Kate. She is a student. Her mother is a bus

driver. Her name is Mary. Her father is a police officer. His name is Bob. Her brother is a student, too. His name

is Jack. She loves her family.

1. Kate lives in ___________.[ ]

A. China

B. Canada

C. England

2. Mary is a ___________.[ ]

A. teacher

B. bus driver

C. doctor

3. Bob is a ___________.[ ]

A. police officer

B. carpenter

C. nurse

4. Jack is a ___________.[ ]

A. teacher

B. pretty

C. student

5. There are __________ people in her family.[ ]

A. five

B. four

C. six

填空题

等温线________的地方，气温差别大，等温线________的地方，气温差别小。