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问题 填空题

请写出一个一元二次方程，使该方程有一个根为x=1：_________。

答案

答案不唯一，如：(x-1)(x+1)=0；2x2+3x-5=0(只要所列方程各项系数和为0即可得分)

一元二次方程的根就是一元二次方程的解，就是能够使方程左右两边相等的未知数的值．即用这个数代替未知数所得式子仍然成立．本题答案不唯一．

解：答案不唯一，如x2=1或(x-1)(x+1)=0；2x2+3x-5=0等．

听力题

根据短文内容和首字母提示，在下文空格处填入适当的词使短文完整。在答题卡标有题号的横线上，完整写出空缺处所填单词的正确形式。（每空一词）

Welcome to China. We’ll invite you to eat the real Chinese food dumplings. In C小题1:, there're many different kinds of food. Some of them are very p小题2:. The real Chinese food is dumplings.  E小题3:in China likes dumplings very much, and there a小题4:many different kinds of dumplings. Some have meat and vegetables in them, o小题5:have sugar, eggs and so on. I like dumplings with vegetables and pork better than any other kind.

U小题6:people make dumplings at home. If you have no time to make them, you can buy them from any shop. Then you t小题7:them home and eat them with vinegar（醋）.

The Spring Festival is very important in China. W小题8:it comes, we make dumplings, usually we p 小题9: a coin(硬币) in a dumpling. If one eats the dumpling w小题10:the coin in it, he or she will be lucky in the year.
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填空题

看图完成对话。

—What's that?

—It is ______.
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