二、根据下列表格回答问题2003年某地区乡镇企业产品出口行业分类表行业全部产值(万元

国际空间站是迄今最大的太空合作项目，其离地高度为H，绕地球做圆周运动的周期为T．又知万有引力常量G，地球半径R以及地球表面重力加速度g．根据题给条件给出两种计算地球质量的方法，并解得结果．

阅读下面的短文，并根据短文后的要求答题（请注意问题后的字数要求）。

     Electronic devices (装置) are changing the way people listen to music. But studies show the devices may

be causing hearing loss in many people. Some experts say people may be playing them too loud and too long.

And experts say sound levels on these devices need to be set lower.

     Researchers did a study with three hundred high school students and one thousand adults. They were

asked about their use of portable music devices. Forty percent of the students and adults said they set the

sound levels at high on their players. But students were twice more likely to play the mu- sic at a very loud

volume (音量). More than half of the students said they would probably not limit their listening time.

     The study found that more than half of the students and less than forty percent of the adults had at least

one kind of hearing loss. Some reported difficulty hearing parts of a discussion between two people. Others

said they had to raise volume controls on a television or radio to hear it better. And, some experienced ringing

in their ears or other noises.

     Hearing experts say part of the problem is the listening equipment people are using. They say large

earphones that cover the whole ear are probably safer than the smaller earbuds (耳塞) that come with most

music players. Hearing loss may not be obvious for years, however, once it happens, there is few chance of

curing. About thirty million Americans have some hearing loss. One third of them lost their hearing as a result

of loud noises.

     The American Speech-language-Hearing Association is working with companies and government officials

on setting rules for use of portable music devices. The group says the best way to protect your hearing is

to _____, limit listening time and use earphones that block out foreign noises.

1. What is the best title of the passage? (Please answer within 10 words.) 

   _______________________________________________________________________________________ 

2. Which sentence in the passage can be replaced by the following one? Compared to adults, teenagers are 

    more likely to turn up their players.

    ______________________________________________________________________________________

3. Please fill in the blank in the last paragraph with proper words or phrases to complete the sentence. (Please

    answer within 10 words.) 

    ______________________________________________________________________________________

4. What trouble will happen to a person if he suffers some hearing loss? (Please give at least two examples

    mentioned in the passage, each within 15 words.

    ______________________________________________________________________________________

5. Translate the underlined sentence in the fourth paragraph into Chinese.

    ______________________________________________________________________________________

流行性乙型脑炎最严重的临床表现是（）

A.癫痫

B.胃溃疡

C.肠穿孔

D.视网膜炎

E.呼吸衰竭

电厂高温高压管道焊后，热处理一般采用（）

A.高温回火

B.淬火处理

C.退火处理

（）受限可被视作压疮出现的必要条件

A.行为/行动能力

B.感觉知觉

C.认知能力

D.营养状况