有关人体的标准姿势正确的叙述是()A．人体直立，两眼向前方平视

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问题多项选择题

有关人体的标准姿势正确的叙述是()

A．人体直立，两眼向前方平视

B．两下肢分离约30cm

C．掌心足尖向前

D．双上肢下垂置躯干两侧

E．两下肢并拢，足尖外展

答案

参考答案：A, C

填空题

单词拼写

1. His accent i ____ him as a Frenchman.

2. They drew different c____ from the facts.

3. What is the s____ of this word?

4. Botany falls into the c____ of biology.

5. I'm f____ up with all the attention.

6. He was not____ (觉察到)of her presence until she spoke to him.

7. Children must learn not to____ (打断……谈话)．

8. _____ (假定)it rains tomorrow,what shall we do?

9. She is determined to do it (不管)of all consequences.

10. The dictionary is____ (特别地)intended for foreign learners of English.

选择题

“绿色化学”对化学反应提出了“原子经济性”的新概念及要求，理想的“原子经济性”反应是原料中的原子全部转变成所需要的产物，不产生副产物，实现零排放．下列反应中符合上述要求的是（　　）

A．甲烷与氯气制备一氯甲烷

B．乙烯制聚乙烯

C．以铜和浓硝酸制硝酸铜

D．工业上制漂白粉