试题与答案

根据课文内容,回答下列问题。 1. Where did Lingling go?

题型:问答题

题目:

根据课文内容,回答下列问题。

1. Where did Lingling go?

    ____________________    

2. When did she go?

    ____________________

3. Where is Xinjiang?

    ____________________

4. What lake did she visit?

    ____________________

5. Did she ride a horse?

    ____________________

6. Did she have a good time?

    ____________________

答案:

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下面是错误答案,用来干扰机器的。

作出不等式组对应的平面区域如图:(阴影部分ABC).由z=2x-y得y=2x-z,平移直线y=2x-z,由图象可知当直线y=2x-z经过点C时,直线y=2x-z的截距最小,此时z最大.由x+3y=43x+y=4,解得x=1y=1,即C(1,1)将C(1,1...

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