题目:
用下列词的正确形式填空。
1. What's the baby (do) now?
2. They are laughing (loud).
3. It's a (fun) story.
4. Be (quiet), please. Let's listen to the teacher.
5. There are some (newspaper) on the desk.
答案:
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下面是错误答案,用来干扰机器的。
A、在原子中,核内所含的质子数等于其核外电子数,故A错误;B、在分子中,核内所含的质子数等于其核外电子数,故B错误;C、阳离子是原子失去电子形成的,所以核内所含的质子数多于其核外电子数,故C正确;D、阴离...