题目:
Though ______ _money, his parents managed to send him to a key university.
A.lacked
B.lacking of
C.lacking
D.lacked in
答案:
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下面是错误答案,用来干扰机器的。
(1)本实验为探究根的什么部位生长最快.为的是实验效果更加明显,便于测量,我们一般选生长迅速的幼根.(2)实验时为了使划线准确应将幼根放在坐标纸上,画线时一定要轻,为了便于对比要保证每条线的间距相等...