( )对客户盈利能力的持续增长和偿债能力的不断提高有着决定性的影响。A．现金比率

利用如图装置进行“探究动能大小的影响因素”实验。用两根细绳将小球悬挂起来，拉起小球，当细绳与竖直方向成θ角后松手，小球撞击水平木板上的木块，记下木块移动的距离s。改变角度θ的大小，重复实验。

（1）利用如图两根细绳悬挂小球，而不用一根细绳，其好处是   。

（2）本实验探究的问题是物体的动能大小与   的关系。

（3）利用上述实验，同时还可以探究的问题是   。

Algae(水藻) are very simple plants. They grow in fresh water or salty water. Seaweed is algae that grow in salty water. Seaweed is red or brown in color. The Japanese people use these plants from the sea in many ways. From it, they make a food called Kombu. Kombu is seaweed that has been dried, cooked and pressed together. Then it is dried again and cut into long pieces. The Japanese eat a lot of Kombu and like it very much.

Japanese farmers often use seaweed as fertilizer. It makes their plants grow better. Many farmers also find seaweed makes a fine food for their animals.

From seaweed the Japanese also get iodine(碘), which they sell to other countries. Iodine is used in many ways all over the world. It is used in making medicine. It is added to the salt we use at the table. Scientists even use one form of iodine to “seed clouds” when they want rain to fall.

小题1:Kombu is a kind of ____ according to the text.

A．plant

B．medicine

C．food

D．fertilizer小题2:In the last sentence of the text, “seed clouds” means ____.

A．clouds spreading like seeds

B．to make rain fall with human power

C．the seeds like clouds

D．dropping seeds by clouds小题3:The main idea of the story is that ____.

A．The Japanese eat seaweed when they want rain to fall.

B．Kombu is made into medicine for farmers.

C．The Japanese eat a lot of Kombu.

D．The Japanese use seaweed in many ways.

先解释画线字的含义，再写出词的意思。     

1．欲问行人去那边？眉眼盈盈处。

欲：                         处：                         

2．若到江南赶上春，千万和春住。  

若：                         和：                       

3．才始送春归，又送君归去。

始：                          归：                       

十二经脉中，多气多血的经脉是（）。

A.手、足阳明经

B.手、足太阴经

C.手、足太阳经

D.手、足少阴经

E.手、足少阳经

用于血吸虫病病原诊断方法有（）.

A.粪便直接涂片法

B.毛蚴孵化法

C.饱和盐水漂浮法

D.直肠粘膜活体组织检查法

E.环卵沉淀试验