一患儿突发右小腿痛，活动障碍，X线示右胫骨中段骨折，骨折端膨

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问题单项选择题 B型题

一患儿突发右小腿痛，活动障碍，X线示右胫骨中段骨折，骨折端膨大，骨皮质变薄。引起骨折的主要因素是（）

A.直接暴力

B.间接暴力

C.积累性劳损

D.肌肉牵拉力

E.骨骼疾病

答案

参考答案：E

阅读理解

阅读理解。

I am a Chinese boy. My name is Li Lei. I am twelve. My sister's name is Li Mei. She's

fourteen.'Li Mei and I are students. We like school.

My mother is a teacher. She teaches English. My father is a policeman (警察). My young

brother's name is Li Hong. He is only four. We all like him.

1. Li Lei is _______.

A. Chinese

B. English .

C. American

2. Li Lei's sister is _______.

A. four

B. twelve

C. fourteen

3. Li Lei's mother and father are_______.

A. student and teacher

B. teacher and policeman

C. all teacher

4._______ like school.

A. Li Mei and Li Lei

B. Li Mei and his mother

C. Li Lei and his father

5. How many brothers does Li Lei have?

A. Three.

B. Two.

C. One.

问答题简答题

描述SDH技术段开销中同步状态字节S1（b5～b8）的功能。