英语在线作业第三单元答案

1.I suggest that he put an advertisement in the ________ newspaper.
A boring
B solar
C natural
D local
正确答案:D
2.Do you know a cloudy sky is not always a ________ of rain?
A area
B sign
C action
D signal
正确答案:B
3.She has reached the key point ________ a change is needed.
A which
B that
C as
D where
正确答案:D
4.But by then it was_________ late ________ estimate the damage they’d done.
A too; to
B so; to
C too; not to
D much; as to
正确答案:A
5.Another useful ________ is offered by the possibility of putting very large dictionaries onto a single disc.
A store
B statement
C introduction
D resource
正确答案:D
6.________ quality, it is the best ice cream I have ever tasted.
A By means of
B In spite of
C In terms of
D Instead of
正确答案:C
7.Who left all the lights ________? Can’t you see it is a waste of money?
A off
B in
C on
D under
正确答案:C
8.There will be those who argue that you’re really at college to learn French or physics or ________.
A economics
B economy
C economic
D economical
正确答案:A
9.The couple ________ when their parents called to see them.
A has just gone out
B just went out
C are just going out
D had just gone out
正确答案:D
10.We should be helping to ________ the environment and discouraging the unnecessary cutting of trees.
A increase
B conserve
C disturb
D consume
正确答案:B
11. William J. Sidis, was born in 1898. ___1__ father was an American psychiatrist. At the age of six months, William __2____ the English alphabet; he could read and write when he was two. When he was eight years __3___, young Sidis had completed both elementary and high school. At the age of nine, William entered Harvard University. As a ___4___ at Harvard, Sidis displayed phenomenal knowledge in the field of mathematics, ___5__ amazing his professors. He graduated with honors ___6___ age of 16 and became a full professor of mathematics at the university at 19. ___7____ story of William J. Sidis unfortunately, does not end happily. The promise ___8__ his early years was never fulfilled. At the age of 26, he was found operating an adding machine ___9___ a store in New York. This brilliant ex-genius died a lonely death in 1943 in a hotel room _10___ New York.
1.A. His B. My C. Her D. Their
2.A. spoke B. say C. saw D. knew
3.A. old B. big C. elder D. young
4.A. student B. teacher C. painter D. singer
5.A. but B. often C. are D. out
6.A. at B. in C. on D. or
7.A. at B. in C. on D. or
8.A. of B. in C. or D. for
9.A. in B. on C. out D. inside
10. A. at B. on C. by D. in
正确答案:1-A, 2-D, 3-A, 4-A, 5-B, 6-A, 7-A, 8-A, 9-A, 10-D。