(2013·高考天津卷)It was not until near the end of the letter ________ she mentioned her own plan.

A．that?? B．where

C．why?? D．when

Number sense is not the ability to count. It is the ability to recognize a    1   in number. Human beings are born with this ability.   2   , experiments show that many animals are, too. For example, many birds have good number sense. If a nest has four eggs and you remove one, the bird will not    3  .However, if you remove two, the bird    4   leaves. This means that the bird knows the    5   between two and three.
Another interesting experiment showed a bird's    6   number sense. A man was trying to take a photo of a crow（乌鸦）that had a nest in a tower, but the crow always left when she saw him coming. The bird did not    7   until the man left the tower. The man had an    8  .He took another man with him to the tower. One man left and the other stayed, but they did not    9   the bird. The crow stayed away until the second man left, too. The experiment was    10   with three men and then with four men. But the crow did not return to the nest until all the men were    11  .It was not until five men went into the tower and only four left that they were    12   able to fool the crow.
How good is a human's number sense? It's not very good. For example, babies about fourteen months old almost always notice if something is taken away from a    13   group. But when the number goes beyond three or four, the children are    14   fooled.
It seems that number sense is something we have in common with many animals in this world, and that our human    15   is not much better than a crow's.

完形填空（共20小题；每小题1分，满分20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的最佳选项，并在答题卡上将该项涂黑。

A man was driving at 70 miles in a 40-mile zone（区域）, when a    1.   came behind him.  2.  the man started thinking of excuses to give.

As the policeman came to him, he said, “Hi, officer, I guess you   3.   me a little bit over the speed limit. I was in a rush to get   4.  , to be with my wife and kids. You know my younger son wasn’t feeling too  5.   when I left home this morning. I’m afraid he’s ill.”

The policeman said, “Well, I guess so,” and started   6.   something in his notebook. As minutes went by, he could see from the side view mirror, the policeman was  7.   writing. When the man was wondering why he hadn’t asked for his driving   8.   so far, the policeman came to his window,  9.   him a piece of paper, and returned to his car without saying a single word. The man wondered: how much was this   10.  going to be? However, the man was  11.   it was not a ticket（罚单）at all and he began to   12.  :

“I had a daughter who was   13.   by a speeding car at the age of six by a speeding driver. He got a fine, a few months in  14.  , and then was free, free to hug his two daughters. I only had one, and now I have to  15.   until I get to heaven before I can hug her again. I have tried to     16.  that man a thousand times, and I thought I had. Maybe I really did forgive（原谅） him. So pray（祈祷）for me, and be   17.   when you drive again. My son is all I have been left with.”

The man was completely   18.   and could not move for the next few minutes. When finally he did, he drove  19.  , even a few miles   20.   the speed limit, praying for forgiveness.

21. A. truck            B. mail car         C. police car           D. taxi

22. A. Just now     B. Just so          C. Right now            D. Right away

23. A. remembered   B. caught           C. mistook          D. recognized

24. A. to school        B. home             C. out              D. to hospital

25. A. well         B. happy                C. free             D. bad

26. A. writing      B. looking for      C. listing              D. looking up

27. A. even         B. really               C. never                D. still

28. A. route            B. License（执照）  C. Journal          D. Insurance（保险）

29. A. handed       B. sent             C. rewarded         D. pushed

30. A. paper            B. note             C. notice           D. ticket

31. A. excited      B. upset                C. surprised            D. angry

32. A. laugh            B. smile                C. read             D. think

33. A. hit          B. knocked          C. trapped          D. killed

34. A. fear         B. trouble          C. prison               D. danger

35. A. stay         B. wait             C. remain           D. escape

36. A. forgive      B. attack           C. educate          D. support

37.A. honest            B. thankful         C. patient          D. careful

38. A. disappointed   B. nervous            C. shocked          D. frightened

39. A. quickly      B. slowly           C. fortunately      D. rapidly

40. A. under            B. over             C. to               D. with

Number sense is not the ability to count. It is the ability to recognize a    1   in number. Human beings are born with this ability.   2   , experiments show that many animals are, too. For example, many birds have good number sense. If a nest has four eggs and you remove one, the bird will not    3  .However, if you remove two, the bird    4   leaves. This means that the bird knows the    5   between two and three.

Another interesting experiment showed a bird's    6   number sense. A man was trying to take a photo of a crow（乌鸦）that had a nest in a tower, but the crow always left when she saw him coming. The bird did not    7   until the man left the tower. The man had an    8  .He took another man with him to the tower. One man left and the other stayed, but they did not    9   the bird. The crow stayed away until the second man left, too. The experiment was    10   with three men and then with four men. But the crow did not return to the nest until all the men were    11  .It was not until five men went into the tower and only four left that they were    12   able to fool the crow.

How good is a human's number sense? It's not very good. For example, babies about fourteen months old almost always notice if something is taken away from a    13   group. But when the number goes beyond three or four, the children are    14   fooled.

It seems that number sense is something we have in common with many animals in this world, and that our human    15   is not much better than a crow's.

1.                A．rise            B．pattern         C．change   D．trend

2.                A．Importantly      B．Surprisingly      C．Disappointedly D．Fortunately

3.                A．survive         B．care           C．hatch D．notice

4.                A．generally       B．sincerely        C．casually   D．deliberately

5.                A．distance        B．range          C．different  D．interval

6.                A．amazing        B．annoying        C．satisfying  D．disturbing

7.                A．relax           B．recover         C．react D．return

8.                A．appointment     B．excuse         C．idea D．explanation

9.                A．fool           B．hurt           C．catch D．kill

10.               A．reported       B．repeated       C．designed  D．approved

11.               A．confused       B．gone           C．tired  D．drunk

12.               A．gradually       B．luckily          C．strangely  D．finally

13.               A．single          B．small           C．local  D．new

14.               A．seldom         B．temporarily     C．merely    D．often

15.               A．sight           B．nature         C．ability D．belief

Number　 sense is not the ability to count. It is the ability to recognize a 　 1　 in number. Human beings are born with this ability. 2 ，experiments show that many animals are, too. For example, many birds have good number sense. If a nest has four eggs and you remove one, the bird will not　 3 . However, if you remove two, the bird 4 leaves. This means that the bird knows the 　5　 between two and three.

Another interesting experiment showed a bird's 6 number sense. A man was trying to take a photo of a crow(乌鸦)that had a nest in a tower, but the crow always left when she saw him coming. The bird did not 7 until the man left the tower. The man had an 8 .He took another man with him to the tower. One man left and the other stayed, but they did not 9 the bird. The crow stayed away until the second man left, too. The experiment was　 10 with three men and then with four men. But the crow did not return to the nest until all the men were 11 .It was not until five men went into the tower and only four left that they were 12 able to fool the crow.

How good is a human's number sense? It's not very good. For example, babies about fourteen months old almost always notice if something is taken away from a 　13 group. But when the number goes beyond three or four, the children are 14　 fooled.

It seems that number sense is something we have in common with many animals in this world, and that our human 15 is not much better than a crow's.

1. A. rise　　　　　　　 B. pattern　　　　　　　　　　　　　 C. change　　　　　　　　　　 D. trend

2. A. Importantly　 B. Surprisingly　 C. Disappointedly D. Fortunately

3. A. survive　　　　　　　　 B. care　　　　　　　　 C. hatch　　　　 D. notice

4. A. generally 　　　　　　 B. sincerely　　 C. casually　　　　　 D. deliberately

5．A. distance 　　　　　 B. range　　　　 C. different　 　　　 D. interval

6．A. amazing 　　　　　 B. annoying　　　　　 C. satisfying　 D. disturbing

7. A. relax　　　　　　　　　 B. recover　　　　　　 C. react　　　　 D. return

8. A. appointment　　　　 B. excuse　　　　　　 C. idea　　　　　 D. explanation

9. A. fool　　　　　　　　　　 B. hurt　　　　　 C. catch　　　　 D. kill

10.A. repo　　　　　　　　　　　　　 B. repeated　　 C. designed　　 D. approved

11.A. confused　　　　　　 B. gone　　　　 C. tired　　　　　 D. drunk

12.A. gradually　　　　　　 B. luckily　　　 C. strangely　 D. finally

13.　 A. single　　　　　　　 B. small　　　　 C. local　　　　 D. new

14. A. seldom　　　　　　　 B. temporarily C. merely　　　 D. often

15. A. sight　　　　　　　　　 B. nature　　　 C. ability　　　　 D. belief