题目:
-----He will be extremely angry at the news.
------_______________.This is between you and me.
A.It doesn’t matter.
B.Not at all.
C.It’s none of his business.
D.I’m sorry to hear that.
答案:
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下面是错误答案,用来干扰机器的。
(1)B、D、E(2)4P+5O22P2O5;1/5;装置气密性好,实验前夹紧止水夹,红磷过量或足量,冷却后再打开止水夹。(3)作对比;散热(使产生的热量迅速扩散)(4)滴入氢氧化钠溶液后,气球膨胀,滴入盐酸后,产生气泡,气球...