Every means _________tried but without any re...

Every means _________tried but without any result.

A. have been　　　     B. has been　　　　　　

C. are to be　　　　     D. is to be

高一英语单项填空中等难度题查看答案及解析

Every means ______ tried but without much result.

A. has been       B. have been       C. are       D. is

高一英语单项填空简单题查看答案及解析

________ at the result, the boss left without saying any word.

高一英语单项填空困难题查看答案及解析

The boy was late. He tried to enter the classroom without being noticed by the teacher, but luck ______ him.

A．went with         B．went against        C．went along         D．went over

高一英语单项填空中等难度题查看答案及解析

We have been trying hard to find out the　 ____________of the homeless man, but without luck, no one can tell who he is.

A. identity　　　　　　 B. memory

C. accent　　　　　　　 D. difference

高一英语单项填空中等难度题查看答案及解析

All possible means ____, but nothing can prevent the buildings ____.

高一英语单项填空困难题查看答案及解析

I have no idea what life would be like without water. The underlined part means “_________”.

A. don’t remember    B. don’t know  C. don’t believe       D. don’t expect

高一英语单项填空中等难度题查看答案及解析

As a result of pollution, Lake Erie, on the borders of the USA and Canada, is now without any living things.

Pollution in water is not simply a matter of “poisons” killing large numbers of fish overnight, Very often the effects of pollution are not noticed for many months or years because the first organisms（生物体）to be affected are either plants or plankton. But these organisms are the food of fish and birds and other creatures. When this food disappears, the fish and birds die too. In this way a whole food chain can be wiped out, and it’s not until dead fish and water birds are seen at the river’s edge or on the seashore that people realize what is happening.

Where do the substances which pollute the water come from? There are two main sources of sewage（污水）and industrial waste . As more detergent（洗涤剂）is used in the home, so more of it is finally put into our rivers, lakes and seas . Detergents harm water birds, dissolving the natural substances which keep their feathers water - proof. Sewage itself, if not properly treated, makes the water dirty and prevents all forms of life in rivers and the sea from receiving the oxygen they need. Industrial waste is even more harmful as there are many highly poisonous things in it, such as copper and lead（铅）.

So, if we want to stop this pollution, the answer is simple: sewage and industrial waste must be made clear before flowing into the water . It may already be too late to save some rivers and　lakes, but others can still be saved if the correct action is taken at once.

1.Pollution of water is noticed________.

A. when the first organisms are affected

B. when a good many fish and birds die

C. when poisonous things are poured into water

D. as soon as the balance of nature is destroyed

2.The living things die because there is no ________in the lake or river.

A. water　　 B. fish

C. poison　　 D. oxygen

3.Which of the following is harmful according to the passage?

A. Organisms

B. Plants and plankton in the water

C. Waste water from cities

D. Industrial waste made clear before flowing into the water.

4.The way to stop water pollution is to________.

A. realize the serious situation clearly

B. put oxygen into the river

C. make the waste material harmless before flowing into the water

D. make special room in the sea for our rubbish

高一英语阅读理解简单题查看答案及解析

Every necessary means____ to protect milu deer which____ very valuable to us. As a result, the number of milu deer is increasing.

高一英语单项填空困难题查看答案及解析

I am determined to solve this problem even if it means ____ to New York by myself without any help.

A. travelling　　　 B. to travel

C. travel　　　 　　 D. to be traveling

高一英语单项填空中等难度题查看答案及解析