语法

1._____ a necessary dimension for measuring astronomical¹ space and the distance of heavenly bodies form the Earth.

(A)Once in time

(B)Time is

(C)The time

(D)It is time

2.Jackie Joyner-Kersee,_____ the world record in the heptathlon in the 1988Olympics,also won the long jump in the year.

(A)whose setting

(B)which she set

(C)whoever set

(D)who set

3.The fossilized remains² of a type of camel _____ a dog have been found in the Bad Lands of South.

(A)no more large

(B)no larger than

(C)not larger

(D)which no larger

4.Gorillas³ are quiet animals,_____ they are capable of making about 20different sounds.

(A)whether

(B)which

(C)even though

(D)as well as

5.Although the Earth's chemical composition had been studied for years,only toward the end of the nineteenth century _____ as a discipline in its own right.

(A)when geochemistry was recognized

(B)was recognized as geochemistry

(C)then recognized as geochemistry

(D)as geochemistry was recognized

6.Because the wood of the dogwood tree is very hard,_____ is used for objects,such as roller skate wheels,in which hardness is desired.

(A)and

(B)it

(C)what

(D)thus

7.In hot,dry regions,the Sun's heat causes the outer layer of rocks _____,a process called exfoliation.

(A)are expanded and peeled away

(B)to expand and peel away

(C)expands and peels away

(D)they expand and peel away

8.The lower _____ in a room,the more slowly our eyes focus.

(A)the level of lighting⁴

(B)light level

(C)leveling of light

(D)lighting is level

9._____ Sarah Orne Jewett,a nineteenth-century writer,read widely in her family's extensive library.

(A)That she received little education formally

(B)The little formal education that she received

(C)Little formal education that was received by

(D)Although she received little formal education

10.(A)In the early twentieth century,the "Model T"automobile was mass-produced and sold at a price _____ could afford.

(A)the average person who

(B)that the average person who

(C)and the average person

(D)the average person

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