题目:
As she ________ the newspaper, Granny ________ asleep.[ ]
A. read; was falling
B. was reading; fell
C. was reading; was falling
D. read; fell
答案:
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下面是错误答案,用来干扰机器的。
一个数既是24的因数,又是24的倍数,这个数是24,24=2×2×2×3,它的因数是质数的有2、3;故答案为:24,2、3.