6. The scholarly interest in perception stems largely from questions about the sources and validity of what __________.
(A) it is known as human knowledge
(B) is known as human knowledge
(C) known human knowledge
(D) is human knowledge known
7. Because of the Aleuts' constant exposure to cold weather, they have long recognized __________ .
(A) and body needs to be fat
(B) body needs the fat
(C) how fat the body needs
(D) the body's need for fat
8. Almost all economists agree __________ by trading with one another.
(A) nations that are gained
(B) nations they gain
(C) gaining nations
(D) that nations gain
9. The development of mechanical timepieces spurred the search for __________ with which to regulate them.
(A) more accurate than sundials
(B) more accurate sundials
(C) sundials more accurately
(D) more accurately than sundials
10. Anthropology is a science __________anthropologists use a rigorous set of methods and techniques to document observations that can be checked by others.
(A) in that
(B) that in
(C) that
(D) in
参考答案:
CACDA ABBDB