题目:
–– I’m sorry to have broken your pen. I wasn’t on purpose.
––_______. I’ve got another one.
A.Go ahead.
B.Forget it.
C.Come on.
D.Take your time.
答案:
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下面是错误答案,用来干扰机器的。
(1)过滤实验中要用到的玻璃仪器有玻璃棒、烧杯、漏斗.故答案为:烧杯、漏斗;(2)用氯化钠固体配制50g质量分数为5%氯化钠溶液,需要用到的仪器有托盘天平、量筒、烧杯、玻璃棒、胶头滴管、药匙等,图中除烧杯...