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【简答题】
若将 10mol%Na 2 O加入到SiO 2 中去,计算 O∶Si比例是多少?这样一种配比有形成玻璃趋向吗?为什么?
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举一反三
【单选题】听力原文：M: Did you tell Tom about the meeting? W: Whatever I say to him goes in one ear and out the other. Q: What does the woman mean? (4)
A.
Tom doesn't listen to her.
B.
Tom went out before the meeting was over.
C.
Tom is unable to hear well.
【单选题】Could you tell me________?
A.
when did Tom come back
B.
when does Tom come back
C.
when Tom will come back
D.
when Tom come back
【单选题】--- Did Tom tell you to water the flowers? --- __________ .
A.
No. And so did I
B.
No. And neither did I
C.
He did And so I did
D.
He did And so do I
【单选题】以下关于小肠的描述哪一条是错误的（）
A.
小肠是食物消化与吸收的最重要部位
B.
小肠内含有大量的小肠液，成人每日分泌约1-3L的小肠液
C.
小肠还是一个重要的内分泌器官，许多消化道激素在这里产生
D.
食物通过小肠后，仍留下许多营养物质，由大肠吸收
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