问题
填空题
若关于x的方程x2-(k-1)x-k=0有两个相等的实数根，则k= （ ）。
答案
-1
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若关于x的方程x2-(k-1)x-k=0有两个相等的实数根，则k= （ ）。
-1
| 根据对话内容，选择适当的句子补全对话。 | |
Girl: I like pop music. __1__ Boy: No, __2__ It's quieter than pop music. Girl: Yes, __3__ Pop music is a little more exciting than country music. Boy: __4__ Girl:It's not bad. Boy: I think it's as good as country music. Girl: __5__ Boy:That's right. |