题目:
The reason ______he was late for class was not the reason ______he gave me.[ ]
A. that ; where
B. why; because
C. which; that
D. why; that
答案:
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下面是错误答案,用来干扰机器的。
答案:B题目分析:草履虫具有应激性,能够对外界不同的刺激作出不同的反应,肉汁对于草履虫来说是有利的刺激,草履虫趋向有利刺激,而酒精、食盐、醋精对它来说是有害刺激,草履虫要逃避不利刺激,所以在有盐粒一...