The chances of discovering life on Neptune are about a million _____.

　　A. at one    B. for one    C. to one    D. against one

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.

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.

The chances of discovering life on Neptune are about a million _____.

　　A. at one    B. for one    C. to one    D. against one

　　①Brain-injured boy set for ￡ 1.75m payout

　　A YOUNGSTER who was knocked off his bicycle by a taxi and left with a serious brain injury is set to be awarded ￡ 1.75 million.

　　Fourteen-year-old George Currie, from Dalkeith, was living in country Durham with his parents Allister and Paula at the time of the accident in September 1993.

　　George, who was then three years old, was riding his small tricycle along the pavement when he lost control and swerved on to the road into the path of an on-coming taxi.

　　The driver's insurance company has now ac cepted responsibility for the accident and New Castle County Court is expected to rule on the payout on Monday.

　　②Boating accidents reduce

　　Lee and Collier counties tied at No. 10 for boating accidents in Florida in 2004, an improvement for both.

　　But because the counties remained in the top 10 among Florida's 67 counties, safety continues to be a concern, officials said.

　　③Teens react to new law on driving permit

　　Lawmakers may hope to make teenage drivers drive more safely, but some local teens behind the wheel feel angry following the passing of Senace Bill 36 last week.

　　SB 36 is a law that limits times new teen drivers can drive and the number of passengers

　　④Road accidents take costly toll

　　Traffic accidents kill more than one million people each year, injure tens of millions more and cost developing countries twice as much as they receive in international aid, the leader of a research body said Wednesday.

　　The figures have led experts to form an international road safety network to choose the most important research areas, inform policy makers and help develop ways to prevent accidents, particularly in poor nations.

　　pavement: 人行道

　　swerve: 突然转

　　insurance: 保险.

　　Florida counties with the most accidents in 2004:

　　1．Monroe (98)

　　2．Palm Beach (65)

　　3．Pinellas (64)

　　4．Broward (59)

　　5．Miami-Dade (54)

　　6．Okaloosa (34)

　　7．Orange (24)

　　8．Bay (22)

　　9．Lee (21)

　　10．Collier (21)

(1) What does Passage ① tell us about the boy?

[　　]

A．He was injured in the head when he was 14.

B．He has waited for the payout for a long time.

C．He has lived in the same place since the accident.

D．He was run over by a taxi when riding on the pavement.

(2) What can we learn about Lee and Collier counties from Passage ②?

[　　]

A．They both became safe places.

B．They won the same place in race.

C．They had the same number of accidents.

D．They joined hands in reducing accidents.

(3) Which passage would give more information on the prevention of road accidents?

[　　]