Under what conditions are helicopters found to be absolutely essential？

一些商店) in the residential area.

ary Training for College Students. You should write at least 120 words following the outline given below in Chinese:

On Military Training for College Students

1. 大学生军训的现状;

2. 人们对军训的看法;

3. 你的态度。

If indeed silence is golden, it is also becoming as rare as gold.

It seems that the progresses of man includes a rising volume of noise. 【M1】______

In every home a stereo or television will fill the rooms sound. 【M2】 ______

Between sunrise and sunset, streets and highways are a constant source

of voice from cars, buses, and trucks. You can pass any factory or 【M3】 ______

construction area and the roar of their machinery will make your ears 【M4】 ______

ringing. Music is played in every supermarket, most restaurants, and 【M5】 ______

many offices. Big cities of the world are well-known by. their noisiness.【M6】______

Noise pollution is the new side effect of our technological

age. Day or night, sound of the work fills the air. It seems 【M7】______

that the smoothing effects of silence are nowhere to be found.

Even the quiet of our careful protected wilderness areas can 【M8】______

be invaded at any moment by a passed jet. 【M9】______

We are learning, finally, that silence is a natural resource

and must be protected by law. It appears that we all find company

in sound, if we all demand a little quiet from time to time. 【M10】______

【M1】

授人以渔，他将终生受用)