With alarming regularity, we read about

题型:阅读理解

问题:

With alarming regularity, we read about oil tankers having accidents near land and the terrible consequences of the oil spills(泄露) on people, nature, and the environment.

Millions of dollars have been used in developing special chemicals to help dismiss the spills and to clean up the animals, beaches, and land spoiled by the oil.Unfortunately, when many of these chemicals are used, more damage is caused to the environment, especially to lives in the sea.

Of all of today’s environmental disasters, an oil spill may actually be one of the least serious.Although oil is poisonous, it is a natural material.In the end, it breaks down naturally.There are, of course, long-term effects, but it is usually more serious in the short term.

Nature by itself works better than chemical materials, but when there is a spill we demand that governments act immediately with as much hi-tech knowledge as possible.In 1967 the tanker Torrey Canyon sank off the Sicily Isles near the coast of England and spilled 120,000 tones of oil into the ocean.If you go there today, you will find it hard to see any sign that it ever happened.

Governments seem to accept the risk of transporting millions of tons of oil by ship every day so that we can fill up our cars and drive around and cause even more environmental damage.Interestingly, the biggest companies in the world produce cars, and the next biggest supply the gasoline to make them run!

We should be thinking more about reducing our dependency on oil.Governments should be encouraging research into new technologies, such as cars run by solar power(太阳能), electricity, hydrogen, and so on.Much of this research has, in the past, been held back by the oil, gas, and coal.

If the world’s millions of cars were 10% more efficient(高效的)— and the industry could easily produce cars at least twice as efficient — we would need many fewer tankers crossing the oceans each year.If this happened, the risks of oil spills would be reduced, and the air we breathe would be cleaner and fresher, too.

小题1:What is the passage mainly talking about?

A.Oil tanker accidents.

B.Oil spills pollution.

C.What oil pollution is.

D.How to reduce oil pollution.小题2:How does the author support the idea that oil spills are not as serious as people believe?

A.By giving a description.

B.By making an argument.

C.By giving an example.

D.By drawing a diagram.小题3:What does the underlined word “risk” in Paragraph 5 refer to?

A.Transportation depending more on oil.

B.Poisonous oil breaking down naturally.

C.Millions of tons of oil spilling into the sea.

D.More environmental damage being caused.小题4:Which suggestion is made for reducing oil tank accidents according to the passage?

A.We should develop new technologies to cut oil use

B.Tankers should not be allowed to sail near the coastlines.

C.We should build safer oil tankers in the near future.

D.Countries should build more oil pipelines under the sea.

考点:科教类阅读
题型:阅读理解

克雷伯杆菌肺炎首选()

A.青霉素类

B.氨基糖苷类抗生素

C.喹诺酮类

D.磺胺类

E.大环内酯类

题型:阅读理解

具有泻下、软坚、清热作用的药物是()

A.大黄

B.番泻叶

C.芒硝

D.芦荟

E.郁李仁

题型:阅读理解

船舶柴油机气缸套正常磨损的特征是()。

A.最大磨损部位在气缸套的上部

B.最大磨损部位在气缸套的下部

C.最大磨损部位在气缸套的中部

D.缸壁上产生纵向拉痕

题型:阅读理解

下列关于企业所得税的说法正确的是()。

A、审批减免税要按权限集中的原则,不搞层层下放

B、对于部分企业如集团公司可以汇总纳税

C、企业所得税额=应纳税所得额×税率

D、企业所得税的纳税年度自公历1月1日起至12月31日止

题型:阅读理解

下列有关控制系统的数学模型描述错误的是()。

A.微分方程是在时间域内描述系统动态性能的数学模型

B.线性微分方程经过拉氏变换,即可得到传递函数

C.根轨迹法是建立在传递函数模型基础上的

D.传递函数仅可以表征系统的动态性能

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