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【单选题】
阶级社会发展的直接动力是（ ）。A.
社会改革
B.
阶级斗争
C.
社会基本矛盾
D.
个别劳动时间
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举一反三
【单选题】Doing physical exercise _______ the risk of heart disease.
A.
lessens
B.
increases
C.
brings
D.
changes
【简答题】Why do human beings still risk their lives under ground and doing one of the dirtiest and most erous jobs in the world? It is an increasingly urgent question, given the recent mining accidents in ...
【简答题】risk_____(to do/doing)
【简答题】Doing nothing does not eliminate risk.
【单选题】What will Bob mostly be doing on his trip to St. Lucia?
A.
Reading and scuba diving.
B.
Scuba diving and motocycling with Gloria.
C.
Accompanying Gloria on shopping and dancing.
D.
Doing whatever pleases Gloria.
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