对于年龄在40岁以下患者，以下哪种疾病最容易导致髋关节退行性关

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问题单项选择题

对于年龄在40岁以下患者，以下哪种疾病最容易导致髋关节退行性关节炎

A．高雪病
B．先天性髋关节半脱位
C．股骨头骨骺滑脱
D．股骨前倾角增大
E．先天性髋关节脱位

答案

参考答案：B

填空题

根据汉语提示完成句子。

1.They (表演) an English short play for us tomorrow.

2. Could you tell me the best way (筹款)?

3. The students will (决定) the way to travel.

4. Kate will go on the (野外旅行) with her friends tomorrow.

5. You have to (减速) when you drive in a busy street.

6. How can we (对待) the problems?

7. We should (轮流) to clean our classroom.

8. Please (好好照顾) yourself. You'll get well soon.

9. — I'm worried about my speech.

— (别紧张) and don't worry, you can do it

10. They are going to Mount Tai (看日出)

单项选择题

历史上的战争都有正义和非正义之分（）。

A.正确

B.错误