6. --- has been a topic of continual geological research.
(A) Did the continents originate
(B) How did the continents originate
(C) Have the continents originated
(D) How the continents originated
7. Because the papaya grows readily from seed, ---spread from its home in Central America and now grows throughout the tropics.
(A) to be
(B) it
(C) the
(D) its
8. The elimination of inflation would ensure that the amount of money used in repaying a loan would have ---as the amount of money borrowed.
(A) as the same value
(B) the same value
(C) value as the same
(D) the value is the same
9. Futurism, ---early twentieth-century movement in art, rejected all traditions and attempted to glorify contemporary life by emphasizing the machine and motion.
(A) an
(B) was an
(C) that it was an
(D) that an
10. All living organisms constantly absorb carbon 14 ---their existence.
(A) out
(B) about
(C) around
(D) throughout
参考答案:
AADCC BDCAB