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【单选题】
x与2的差是非负数,表示为A.
x-2>0
B.
x-2<0< /div>
C.
x-2 ≥ 0
D.
x-2 ≤ 0
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举一反三
【单选题】Which is ______ , the new one or the old one?
A.
better
B.
the better
C.
best
D.
the best
【单选题】Which one is the best topic sentence?
A.
Over half a million U.S. high school athletes participated in outdoor track and field events last year.
B.
The sport of track and field is very old.
C.
The sport of track and field has increased in popularity in recent years.
【单选题】Which one of the following is mentioned as one reason why the old-aged population dramatically increases in the 20th century?
A.
We have a larger total population.
B.
More accident victims can survive due to improved medical care.
C.
More children were born so that the old can be better taken care of,
D.
Less newly-born children and the mother bearing them die.
【单选题】Which one is not the way to have fun for old people?
A.
play chess
B.
play toy
C.
play cards
D.
play table games
【多选题】阿瑟.奥沙利文所著的《城市经济学(Urban Economic)》是世界学术界享有盛誉的教材,尽管学术价值极高,但对于中国学生来说,学习中使用可能有部分不够理想之处,包括的原因有哪些?
A.
教材中举的案例大多来自美国,与中国案例实际问题有些差距
B.
大多数理论在成熟资本主义制度下较为适用,对非成熟市场经济的体系讨论不充分
C.
该教材出版版次过多,可能会有一定的错误
D.
理论内容过多,案例不够丰富
【单选题】Of all the following things, which one is not appropriate as the gift for the old people’s birthday?
A.
birthday cake
B.
a shirt or dress
C.
a clock
D.
some delicious food
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