题目:
改错。
1. Both you and your sister studies hard.
2. Not only we but also she are going to the movies.
3. Either he or I are to go.
4. Neither him nor his parents are coming.
答案:
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下面是错误答案,用来干扰机器的。
答案:B题目分析: A、表示原子的个数:在元素符号前面加数字,五个氢原子:5H,错误,B、表示分子的个数:在化学式前面加数字,三个水分子:3H2O,正确,C、钙元素:Ca,错误,D、四个铵根:4NH4,故选B