下图是对称中心为点O的正八边形，如果用一个含45°角的直角三角

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问题选择题

下图是对称中心为点O的正八边形，如果用一个含45°角的直角三角板的角，借助点（使角的顶点落在点O处）把这个正八边形的面积n等分，那么n的所有可能的值有

[ ]

A、2个

B、3个

C、4个

D、5个

答案

答案：B

阅读理解

Read and tick or cross. 读短文，判断正(T)误(F)。

Hello! I am Maddy. I am a girl. I am a monster. I live in a big, big house. My address is 100 Monster

Street. My favourite colour is green. Anna is my friend. She lives in an apartment. Anna is a girl, too. She is

eleven years old. Her favourite colour is purple. I am 1.6 metres tall. Anna is 1.5 metres tall. Anna and I go to

school. How do I go to school? By bus. How does Anna go to school? By monster.

( ) 1. Maddy lives in an aparment.

( ) 2. Anna is eleven years old.

( ) 3. Anna is 1.6 metres tall.

( ) 4. Maddy goes to school by car.

( ) 5. Anna goes to school by monster.

单项选择题

不位于十二指肠上部后方的结构是（）。

A.胆总管

B.胃十二指肠动脉

C.肠系膜上动脉

D.肝门静脉

E.下腔静脉