一、单项选择题。
1.A deadly disease has affected these animals.
A. contagious
B. serious
C. fatal
D. worrying
2.America's emphasis on the importance of education for every one has spurred scientific research.
A. encouraged
B. endangered
C. endorsed
D. enlarged
3.In 1861, it seemed inevitable that the Southern states would break away from the Union.
A. strange
B. certain
C. inconsistent
D. proper
4.Even in a highly modernized country, manual work is still needed.
A. expressive
B. physical
C. exaggerated
D. dubious
5.John is collaborating with Mary in writing a book.
A. cooperating
B. merging
C. combining
D. associating
6.When she was invited to the party, she readily accepted.
A. willingly
B. merging
C. combining
D. associating
7.I rarely wear a raincoat because I spend most of my time in a car.
A. normally
B. seldom
C. continuously
D. usually
8.Practically all species of animals communicate either through sounds or through soundless codes.
A. Simultaneously
B. Almost
C. Absolutely
D. Basically
9.I suppose he will give in eventually.
A. in a way
B. in due course
C. in the end
D. in any case