问题 填空题

(3分)哈尔滨市政府扶持农民采用棚栽技术种植蔬菜,从而满足人们对蔬  菜的需求,现在市场的蔬菜种类繁多,并且每个季节都能购买到需要的蔬菜。请回答下列问题:

为了增强蔬菜的抗寒能力,需要施加的化肥种类是(1)___________________________,马铃薯产量高,营养丰富,可烹饪出美味佳肴,马铃薯富含淀粉,其化学式为(2)_______。所提供的营养素的作用是(3)___________________________。

答案

(1)磷肥        (2)(C6H10O5n

(3)在人体内经氧化放出能量,为机体活动和维持恒定体温提供能量

题目分析:(1) 磷肥的作用:促进植物根系发达,穗粒增多,饱满(催果),抗旱抗寒,促进作物提早成熟,故为了增强蔬菜的抗寒能力,需要施加的化肥种类是磷肥

(2) 淀粉的化学式为:(C6H10O5n

(3) 淀粉属于糖类,主要作用是:在人体内经氧化放出能量,为机体活动和维持恒定体温提供能量

多项选择题
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I am so worried about global warming. We need stop cutting down all of the trees so that they can absorb the carbon dioxide. I think the Kyoto Protocol(京都议定书) to stop pollution is a great idea ,and I hope our country will decide to follow it, too.

— Eli S.,10,Texa

People should do all they can to help stop pollution, even if it is something as little as recycling your soda can. Every little thing helps. Maybe schools can put recycling bins in classrooms. Students can bring in all of their cans and bottles and see how many the school can collect.

— Lindsey A.,11, Massachusett

The United States should take action to help stop pollution. Since we are one of the richest countries, we should at least spend a little money to help.

— Aaron z,11,Massachusett

It is not good that the United States is not following the Kyoto Protocol. The U.S. is one of the most pollution emitting (污染物排放)countries in the world. Even if the rest of the world agrees to follow those rules, without the U. S. and its big businesses agreeing, global warming will still be a big problem.

—Augustine S.,11,Ohio

The world needs to learn more about global warming problems. If we do not do something soon then some of Earth’s coolest animals will become extinct. People should use solar power instead of things that pollute the atmosphere!

— Jillian J.,10,Pennsylvania

Global warming is very dangerous, and it must be prevented. Even if people think that it cannot be stopped ,we should  at least try. Stopping global warming is more important than keeping our businesses going. What about the penguins(企鹅)and the polar bears? We can’t just let them become extinct.

—Samantha R.,11,Illinois

小题1:Why does Lindsey suggest schools put recycling bins in classrooms?

A.To keep the classroom clean

B.To help protect wild animals.

C.To help protect our earth.

D.To collect waste in classroom.小题2:Augustine worries that global warming problems will be difficult to solve because      .

A.many people think that global warming cannot be stopped

B.more and more trees are being cut down

C.American government spends little money stopping pollution

D.the U.S. refuses to follow the Kyoto Protocol小题3:Jillian and Samantha believe that     .

A.solar power is earth-friendly energy

B.global warming threatens animals’ survival

C.America is the richest country in the world

D.the penguins and the polar bears are dying out小题4:What do the six children mainly talk about?

A.Environmental problems.

B.The Kyoto Protocol.

C.Animal protection.

D.The climate change.