一、选择题
11.Copernicus maintained that the earth ______ round the sun.
A. moves
B. moved
C. moving
D. move
12.He was very ______ to go，but he had no choice.
A. ready
B. willing
C. reluctant
D. hesitant
13.Two-thirds of his property ______ lost in the fire.
A. was
B. were
C. are
D. have been
14.Remember， nothing hurts concentration ______ reading too slowly.
A. rather than
B. as well as
C. more than
D. instead of
15.Many people have made a ______ to a physical fitness program so as to maintain good health.
A. decision
B. commitment
C. contribution
D. difference
16.Scientists could see many things that most people would ______ to see.
A. feel
B. fail
C. fall
D. fill
17.She passed the examination ______ she studied very little.
A. in spite of
B. despite
C. though
D. in that
18.The father wished the twins to be doctors， but ______ of them liked to study medicine.
A. both
B. neither
C. either
D. none
19.John is so strongly built that he looks as if he ______ an elephant.
A. lifts
B. is lifting
C. lifted
D. could lift
20.The book was sold ______ 50 dollars.
A. in the price of
B. at the price of
C. with the price
D. of all the price in
答案详解
11.正确答案：A
答案解析：表述永恒的真理或客观规律用一般现在时，不管主句谓语用什么时态。而“地球绕着太阳转”是客观规律，所以选A.
12.正确答案：C
答案解析：reluctant“不愿的，勉强的”：“他非常不愿意去，但他别无选择”，所以，reluctant用于本句合适。Hesitant“踌躇的，犹豫的”;ready“准备好的”;willing“愿意的”。
13.正确答案：A
答案解析：以分数限定的名词做主语时，谓语的单复数应同该名词保持一致，而不管分数是单数还是复数。此句中property(财产)是不可数名词，故用单数形式的动词。
14.正确答案：C
答案解析：nothing…more than是习惯用语，意思为“什么也比不上…更…”。句子意思为：记住，什么也比不上读得太慢更伤害注意力的集中了。
15.正确答案：B
答案解析：本句是带有不定式短语作目的状语的简单句。句意为“许多人都投入了身体锻炼计划，以保持良好的健康”。make a commitment“投入，保证”符合题意。
16.正确答案：B
答案解析：句子意思为“科学家能注意到大多数人注意不到的许多事物”。
17.正确答案：C
答案解析：空格前后句子的意思是相反的，由此可知空格处应该用一个表示转折的词。in spite of是介词短语，后面不能跟从句;despite是介词，也不能引导从句。in that意思是“既然，因为”，不符合句意。所以只有C项正确。句意：她通过了考试，虽然她没怎么用功。
18.正确答案：B
答案解析：句中用了but，表示转折，所以A答案错误。either表示“(两个中的)一个”，也不符合句意。neither表示两者都不，符合句意。none是指三者以上的人或物，而句子中说的是the twins，是两个人，所以也不正确。句意：父亲希望这对双胞胎成为医生，但他们没有一人喜欢学医。
19.正确答案：D
答案解析：as if引导的是与现在事实相反的虚拟。
20.正确答案：B答案解析：at the price of是固定搭配，意思是：以…的价钱。
