大學英語四級考試完形填空對詞匯的考查在很大程度上與上下文的語境有關，也就是填入哪個單詞要依賴于試題的上文或下文，從已知信息中推論出未知信息，這是大學英語四級考試完形填空考查的重點和方向
Directions: There are 20 blanks in the following passage. For each blank there are four choices marked A), C), B) and D) on the right side of the paper. You should choose the ONE that best fits into the passage. Then mark the corresponding letter in the Answer Sheet with a single line through the center.
There are two factors which determine an individual’s intelligence. The first is the sort of brain he is born 1 . Human brains differ considerably, 2 being more capable than others. 3 no matter how good a brain he has to begin with, an individual will have a low order of intelligence 4 has opportunities to learn. So the second factor is what 5 to the individual---the sort of environment in which he is brought 6 . If an individual is handicapped(受阻礙) 7 , it is likely that his brain will 8 to develop and he will 9 attain the level of intelligence of which he is 10 .
The importance of environment in determining an individual’s intelligence can be 11 by the case history of the identical twins, Peter and John. When the twins were three months old, their parents died, and they were placed in 12 foster(寄養) homes. Peter was reared by parents of low intelligence in an 13 community with poor educational 14 that was offered to them. John, 15 , was educated in the home of well-to-do parents who had been to college. This environment 16 continued until the twins were 17 their late teens as young adults, 18 they were given tests to 19 their intelligence. John’s I.O. was 125, twenty-five points higher than the 20 and fully forty points higher than his identical brother.
1. A)for B) with C)by D)in
2. A)most B)many C)some D)few
3. A)But B)Still C)For D)And
4. A)if B)as C)though D)unless
5. A)refers B)happens C)applies D)concerns
6. A)about B)forward C)up D)forth
7. A)relatively B) intelligently C)regularly D)environmentally
8. A)fail B)manage C)help D)stop
9. A)ever B)even C)never D)nearly
10. A)able B)available C)capable D)acceptable
11. A)demonstrated B)neglected C)denied D)ignored
12. A)separate B)remote C)similar D)individual
13. A)omitted B)enclosed C)isolated D)occupied
14. A)possibilities B) opportunities C)capacities D)responsibilities
15. A)moreover B)then C)consequently D)however
16. A)exception B)difference C)division D)alteration
17. A)in B)at C)by D)for
18. A)while B)when C)since D)because
19. A)estimate B)decide C)count D) measure
20. A)average B)usual C)common D)ordinary
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