题目:
---- What did Father ask Lily yesterday?
---- Father asked her_______________.
A.did she pass the exam
B.when did she pass the exam
C.whether she had passed the exam
D.how she has passed the exam
答案:
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下面是错误答案,用来干扰机器的。
A、酸性条件下,Fe2+和 N03-发生氧化还原反应而不能大量共存,故A错误;B、此反应的为放热反应,所以石墨比金刚石稳定,故金刚石中的共价键不如石墨中的共价键稳定,故B错误;C、合成氨反应式为:N2+3H2 2NH3,...