西经58°习惯上的表示方法是（ ） A．58°E B．58°W C．58°S D

All living things on the earth need other living things to live. Nothing lives alone. Most animals must live in a group, and even a plant grows close together with others of the same kind. Sometimes one living thing kills another, one eats and the other is eaten. Each kind of life eats another kind of life in order to live, and together they form a food chain(食物链).Some food chains are simple, while others are not. But all food chains begin with the sun, and all food chains become broken up if one of the links disappears.

All life needs sunlight to live on. But only plants can use sunlight directly. Plants are“factories”.They make food from sunlight, water and things in the soil and air.

Plants feed all other living things. Animals can only use the sun’s energy after it has been changed into food by plants. Some animals feed directly on plants, others eat smaller animals. Meat-eating animals are only eating plants indirectly.

What about human beings? We are members of many food chains. We eat wheat, rice, vegetables, fruits and so on. We also eat meat and drink milk. But men often break up the food chains. They kill wild animals. They also make rivers, lakes and seas dirty. When these rivers, lakes and seas are polluted, the fish in them cannot be eaten. If men eat the fish, they will get strange diseases.

Each form of life is linked to all others. Breaking the links puts all life in danger. 

小题1:How does every living thing on the earth live?

A. Each plant can live alone.

B. Each animal can live alone.

C. Every living thing on the earth cannot live without others.

小题2:Which living things can use the sun’s energy directly?

A. Animals      B. Plants         C. All living things

小题3:Who often break up the food chains?

A. Human beings

B. Animals

C. Plant and animals

小题4: Which of the following do you think is the best title of this passage?

A. Animals         B. Plants       C. Food Chains    

小题5:Where can you probably find this passage?

A. In a news report.

B. In your textbook.

C. In a business magazine.

“硬化型”食管癌的特征性影像表现是（）

A.食管局限性狭窄

B.食管腔内充盈缺损

C.不规则龛影

D.牵引性憩室

E.食管扩张下端呈鸟嘴状

甲与乙有仇，某日甲向乙所居住的楼房投掷一枚炸弹，结果不仅将乙炸死，还引起大火，烧毁房屋数间。甲的行为属于( )。

A．牵连犯

B．法条竞合犯

C．想象竞合犯

D．连续犯

商业银行的基础业务是贷款业务。（）

（）是扑救、控制建筑物初期火灾的最为有效的自救灭火设施之一，是应用最为广泛、用量最大的自动灭火系统。

A.水喷雾灭火系统

B.自动喷水灭火系统

C.气体灭火系统

D.泡沫灭火系统