气体压力火警感温线局部受热时，感应管内的（）.A、氦气压力增大，氢气压力不变 B、氦

Always read the          on the bottle carefully and take the right amount of  medicine.[ ]

A. explanations    

B. instructions

C. descriptions    

D. introductions

能量密度是()

A．4.506

B．0.537

C．0.222

D．0.053

E．0.3077

为什么柴油机启动后不应将接地试灯的插头插入插座？

石棉尘可引起（）

A.胸膜间皮瘤

B.膀胱癌

C.肾癌

D.皮肤癌

E.肝血管肉瘤

People eat different things in different parts of the world.
In south China we eat rice every day. Sometimes we eat it two or three times a day, for breakfast, lunch and supper. We usually eat it with fish, meat and vegetable.
The Japanese eat rice, too. They also eat a lot of fish. They sometimes eat raw (生的) fish. In Africa, maize (玉米) is the most important food. People there make maize into flour(面粉). From this flour they make different kinds of bread and cakes.
In western(西方的)countries such as Britain, Australia and the U. S. A, the most important food is bread or potatoes. People there usually make their bread from wheat flour. They cook the potatoes in different ways. In England the most popular food is fish and chips. Sometimes people cook this food at home, but usually they buy it at the shop. They eat this food at home, in their work place, in the park or on the road. People call it "take-away" food.

Which of the following countries is called "a western country"

A．One of the countries in Africa

B．Japan

C．China

D．Australia