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问题
解答题
操场有19个同学跳绳，36个同学打沙包，如果要使打沙包的人数是跳绳人数的6倍，应去掉几个跳绳的同学？
答案
19-36÷6=13（个）
选择题
—Do you like western food, Li Lei?
—No. The food of our country is ______ that of western food.
A. as delicious as
B. not as delicious as
C. less delicious than
D. much more delicious than
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问答题 简答题
减少管内流体运动阻力的措施有哪些？
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