一________________will the meal take?一It'll take two hours,I think.A. How manyB. How muchC. How long
一________________will the meal take?
一It'll take two hours,I think.
A. How many
B. How much
C. How long
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1、利用艾拉托斯特尼筛法无穷素数列表primes (参见讲义第8章) 获得介于100000和200000之间素数的方法是A.take 200000 (take 100000 primes)B.take 100000 (take 200000 primes)C.take 100000 (drop 100000 primes)D.takeWhile (\x - x = 200000) (dropWhile (\x - x = 100000) primes)E.takeWhile (\x - x = 200000) (take 200000 primes)F.[x | x - primes, x 100000, x 200000]G.[x | x - take 200000 primes, x 100000, x 200000]