张先生：一次性塑料杯子含有对环境有害的氟氯烃，应该用纸杯子代_爱下问搜题

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问题单项选择题

张先生：一次性塑料杯子含有对环境有害的氟氯烃，应该用纸杯子代替它。在生产这种泡沫塑料的过程中会产生苯乙烯，它是一种对人体有害的致癌物。此外，泡沫塑料不易被大自然分解，会长久地留在自然界。李研究员：你忽视了制造纸杯对环境的影响。研究表明，生产纸杯要燃烧更多的石油，它所需要的电力是泡沫杯的36倍，并且需要12倍于泡沫杯的蒸汽和2倍于泡沫杯的冷却水。况且纸杯比泡沫杯重，运输也要消耗更大的能量。造纸厂会排出废水，当这些杯子腐烂时，还会产生对全球变暖有负面效应的甲烷。所以，不应该用纸杯代替泡沫杯。以下哪项对于评价张先生和李研究员的意见分歧最重要

A．在多长时间内，张先生和李研究员所说的污染才能达到最大

B．是否某些国家的人比另一些国家的人使用更多的一次性商品

C．能否找到能够替代泡沫杯的无环境危害的产品

D．在分析一种商品对环境的影响时，生产、销售这种商品以及处理它对环境所产生的后果各自应占多大的比重

E．以它们最流行的大小，纸杯和泡沫杯是否能盛同样多的液体

答案

参考答案：D

解析：两个人强调不同的污染环节。

完形填空

完形填空(共20小题；每小题1.5分，满分30分)
阅读下面短文，从短文后各题所给的四个选项(A、B、C和D)中，选出可以填入空白处的最佳选项。
The future belongs to those who believe in the beauty of their dreams. ------ Eleanor Roosevelt
My home is a place of great beauty and agricultural richness, as well as of war and natural disasters. When I was only fourteen years old, I was filled with __36__ in spite of the terrible surroundings. The families living here, who tried to make their living from the land, __37__ great losses.
For the __38__ I felt sorry especially, but I __39__ to be hopeless. I decided that where I was, I could do __40__ to help them. I began knocking on every door and saying to each person who __41__ my knock, “I know that you are __42__ and give the birds that come to your yard a little __43__. Please consider me your bird. Give me only a handful of rice each week when I come to your __44__. I will take it to the temple where it can be given to the __45__ children.”
No one seemed to __46__ giving me a handful of rice, even __47__ they had little themselves. On Sunday, I would go to the __48__ and give my handfuls of rice to the monks to __49__ to the children.
One day, I came to a house that had __50__ to give. I told my story and asked if I could be their bird. The woman called her daughters, and __51__ gave me fifty cents, as well as the handful of rice! I began to ask for __52__ and rice from the other “bird feeders”, and they gave them to me. Everyone was happy to be helping those who were suffering, even __53__ only this small way. The temple was soon able to help everyone who came to it for food and clothing.
“Consider me your bird.” My __54__ idea had not stopped the war, but anyway, it was __55__ some peace.

问答题简答题

冷态启动投真空系统的过程？