题目内容
We are living in a wonderful age, which has become wonderful largely through the scientific discoveries and inventions. There are always new discoveries and new knowledge ahead in every field. For example, much is yet to be discovered in electricity. Weather forecasting is an important area today. Science is doing much in the control of diseases.
Science is a never-ending road for us to go along. Every field gives changes to the person who wants to make science his life work.
Science is also a method of thinking, which can teach us how to solve problems and help us to arrive at the truth. The men and women who will be the scientists of tomorrow are in our colleges, factories and farms today. We are all potential scientists.
1. The main idea of this passage is _____.
A. all scientists begin to study when they are very young
B. science teaches us how to work better
C. science is a never-ending road for people to go along
D. weather forecasting is important
2.Discoveries and inventions are the results of the study and use of _____.
A. electricity B. science C. weather D. the truth
3.There are always discoveries _____ for people to make.
A. in electricity B. in weather forecasting
C. in every field D. in thinking
4. Science teaches us how to work by ______ method.
A. important B. scientific C. old D. new
5.The underlined word "potential" means _____.
A. worth B. probable C. learned D. lazy
1.C
2.B
3.C
4.B
5.B
【解析】略
完形填空（共15小题；每小题2分，满分30分）
阅读下面短文，掌握其大意，然后从下列各题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
The human nose is an underestimated tool. Humans are often thought to be 1___ smellers compared with animals, but this is largely because, unlike animals, we stand upright. This means that our noses are 2 to detecting those smells which float through the air, 3 the majority of smells which stick to surfaces. In fact though, we are extremely sensitive to smells, even if we do not generally realize it. Our noses are capable of 4 human smells even when these are 5 to far below one part in one million.
6 , some people find that they can smell one type of flower but not another, while others are sensitive to the smells of both flowers. This may be because some people do not have the genes necessary to generate 7 smell receptors in the nose. These receptors are the cells which sense smells and send 8 to the brain. However, it has been found that even people insensitive to a certain smell at first can suddenly become sensitive to it when 9 to it often enough.
The 10 for insensitivity to smell seems to be that brain finds it 11 to keep all smell receptors working all the time but can 12 new receptors if necessary. This may also explain why we are not usually sensitive to our own smells we simply do not need to be. We are not 13 of the usual smell of our own house but we 14 new smells when we visit someone else's. The brain finds it best to keep smell receptors _ 15 for unfamiliar and emergency signals such as the smell of smoke, which might indicate the danger of fire.
| 1. A. sensitive | B. outstanding | C. insensitive | D. awkward |
| 2. A. limited | B. committed | C. devoted | D. conducted |
| 3. A. catching | B. ignoring | C. missing | D. tracking |
| 4. A. distinguishing | B. discovering | C. determining | D. detecting |
| 5. A. reduced | B. reserved | C. rescued | D. refused |
| 6. A. Fortunately | B. Strangely | C Happily | D. Amazingly |
| 7. A. unusual | B. particular | C. unique | D. typical |
| 8. A. signs | B. information | C. messages | D. signals |
| 9. A. subjected | B. left | C. drawn | D. exposed |
| 10A. expectation | B. expression | C. extension | D. explanation |
| 11.A convenient | B. competitive | C. inefficient | D. adequate |
| 12.A introduce | B. gather | C. develop | D. produce |
| 13.A sure | B. sick | C. aware | D tired |
| 14.A tolerate | B. resist | C. neglect | D. notice |
| 15.A available | B. reliable | C. valuable | D. suitable |