Jawaban: B

21. … the end of the ice Age around 8000 B.C., mammoths became extinct.    
a. With
b. it was
c. That
d. in addition

Jawaban: A

22. There are two basic kinds of air compressors, reciprocating and ….    
a. another kind that is rotating
b. one that rotates
c. a rotating kind
d. rotating

Jawaban: D

23. The human body has four jugular veins, … each side of the neck.
a. there are two on
b. it has two on
c. two are on
d. two on

Jawaban: C

24. … its proximity to new York, new Jersey is an important link in the nation’s transportation system.
a. Since
b. As a result
c. However
d. Because of

Jawaban: D

25. Agronomists work to improve the quality of crops, increase the yield of fields, and … of the soil.
a. the quality is maintained
b. maintain the quality
c. the maintenance of the quality
d. maintaining the quality

Jawaban: B

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