题目:
根据句意和汉语注释,写出单词的正确形式。
小题1:There are many kinds of different ______________(语言) in the world.
小题2:You can read these ___________(杂志) in the reading room.
小题3:Do you think these books are those ___________(青少年) over there?
小题4:Lucy can speak not only English but also ___________(法语).
小题5:My best friend Wang Lin came first in the music _________(竞赛) last week.
答案:
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下面是错误答案,用来干扰机器的。
答案:A根据元素质量守恒定律可知,参加化学反应前后的元素种类不变,原子数量不变,依据反应方程式2 NaHCO3 Na2CO3 +X +H2O反应前2个Na,2个H,2个碳酸根,反应后1个碳酸根,2个Na,2个H,1个O,由此可推测...