患者女性，75岁，右大腿卵圆窝反复出现圆形已多年，此次因便秘突出包块增大，用力还纳后

根据首字母提示或括号内的汉语意思拼写单词。

1. Astronauts in flight must a_____ to weightlessness.

2. Don't soil the carpet with your m_____ shoes.

3. His nationality isn't _____ (有关的) to whether he is a good lawyer.

4. I'm not feeling very well today, o_____ I would do it myself.

5. We are expected to p_____ actively in English class.

6. I see them about once a_____ (两周).

7. He presented a new_____ (概念) of the beginning of the universe.

8. We have already made a_____ for our vacation.

试述脊柱、胸廓的组成和功能。

爆破工程使用的主要材料是（）。

A.雷管和炸药

B．雷管和导火索

C．炸药和钢钎

（）与成人的关系主要表现在亲子关系和师生关系。

A、家庭

B、幼儿

C、教师

D、幼儿园

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