装卸搬运合理化的主要目标是（）。A.节约时间 B.节约劳动力 C.作业自动化 D.降

用所给单词的适当形式填空。

1. He told us _____ (walk) _____(quiet) so that we did not _____ (frightened) the birds.

2. Eddie, I'm going _____ (birdwatch) at the market. What about you?

3. Vane has a _____ (gold) coat.

4. Are there many _____ (live) areas for pandas now?

5. If you eat _____ (little) and exercise _____ (much), you can become healthier.

6. Everyone should do sth to protect the _____ (endanger) animals and help them out of _____ (danger).

7. How often do you go to the cinema? _____(one) a month.

8. A lot of _____ (tour) go to Zhalong to watch birds every year.

9. The doctors are taking _____ (act) to save the dying people.

10. Our teachers often tell us the _____ (important) of being an honest man.

11. We are busy _____ (get ) ready for our lessons.

12. Jack didn't take his subjects _____ (serious), so he failed to pass the exam.

13. Jane writes _____ (careful) in our class.

14. How _____ (heavy) it is raining!

15. We are _____ (deep) sorry for this thing.

小华按如图配方自制了一瓶清凉甘甜的汽水．根据图中信息回答：

（1）汽水瓶是塑料制品，塑料属于______（填“天然”或“合成”）有机高分子材料．

（2）白糖的主要成分是C₁₂H₂₂O₁₁，C₁₂H₂₂O₁₁由______种元素组成，其中C、H元素的质量比为：______．

（3）现测得该配制好的汽水中白糖的溶质质量分数为5%，则配制一瓶（300g）该汽水需要白糖的质量为______g．

（4）摇动汽水瓶后，打开瓶盖，通常会冒出大量气泡，气泡中气体的主要成分是______，该气体是由柠檬酸与______反应生成．

保钾作用最强的利尿剂是（）
可加速毒物排泄的药物是（）
抑制Na⁺-Cl^-共转运子的药物是（）
抑制碳酸酐酶，利尿作用弱的药物是（）

A.乙酰唑胺

B.氢氯噻嗪

C.呋塞米

D.氨苯蝶啶

E.阿米洛利

小李尝试制作果酒，他将葡萄汁放入已灭菌的发酵装置中进行试验(见图)，恰当的做法是

A．加入适量的酵母菌

B．一直打开阀b通气

C．一直关紧阀a，偶尔打开阀b几秒钟

D．把发酵装置放到4℃冰箱中进行试验