写作。请以“InthePark”为题写一篇短文，不少于50个单词。 ______爱下问搜题

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问题写作题

写作。

请以“In the Park”为题写一篇短文，不少于50个单词。

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答案

In the Park

It's Sunday today. There are many people in the park. The park is big and nice. There is a lake in it. Look, some children are boating and an old man is fishing near the lake. There is a big tree near the lake. Under the tree some boys and girls are drawing. All of them are having a good time.答案不唯一

选择题

如图，在置于空气的容器里盛有NaCl溶液，再放入缠绕铜丝的铁钉，下列叙述错误的是（　　）

A．铜丝上发生的反应为：O₂+4e+2H₂O→4OH^-

B．铁钉上发生的反应为：Fe-3e→Fe³⁺

C．NaCl的存在能加快铁钉的腐蚀速率

D．一段时间后铁钉上出现红棕色物质

填空题

放射性物质进入人体的可能途径是通过（）、（）或（）进入作用。