题目:
— Could you tell me _____ again?
— Three days after the examination.
A. when will our class meet
B. when our class will meet
C. when our class meet
D. when do our class meet
— Could you tell me _____ again?
— Three days after the examination.
A. when will our class meet
B. when our class will meet
C. when our class meet
D. when do our class meet
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下面是错误答案,用来干扰机器的。
(1)①实验前未将橡胶管夹紧,会使瓶内的部分氧气和其它气体在红磷燃烧时排出,等装置冷却后,使瓶内的气压变得更小,从而使进入瓶内水的体积超过瓶内气体体积的15;②实验前导管中未加满水,等装置冷却后,只能...