阅读短文，判断正误。正确的写“正确”，错误的写“错误”。

B

     It is Sunday morning.Mr. Brown and his son, Bill, are in a big shopping mall. Mr. Brown wants to buy a new dress for Mrs. Brown. Bill likes oranges. So his father buys two kilos of oranges for him, too. There are many things and many people in the mall. There are men and women, old and young. They all want to buy something there. The people in the mall are friendly. They are glad to help you find what you are looking for.

在学习《常见的碱》课题时，某化学兴趣小组在实验室发现一瓶标有澄清石灰水的试剂瓶底有一些白色固体物质．课后同学们对这瓶石灰水是否变质进行了探究．

提出猜想甲同学认为：石灰水完全变质；

如果你想说“让我们一起踢足球吧！”你应该怎么说？