Pam is very busy and she doesn’t have a lot of time to spend on her hair,and() 书上答案是:so it is with Ann,为什么不是so does或so is Ann?涉及什么语法知识点?1、若-1<a<b<2,则2a-b的范围是?2、已知a∈R,比较
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Pam is very busy and she doesn’t have a lot of time to spend on her hair,and() 书上答案是:so it is with Ann,为什么不是so does或so is Ann?涉及什么语法知识点?
1、若-1<a<b<2,则2a-b的范围是?
2、已知a∈R,比较“1+2乘以a的四次方”与“a²+2乘以a的三次方“的大小
so does Ann :所以安妮; so is Ann :所以是安妮.
so it is with Ann:所以Pam是与安妮一样.
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第一个题:由于是两个动作一个谓语是is一个是do所以两个一起回答时必须用so it is with 而不能用so does或so is
第二个题:用线性规划a-b<0,-1<a<2,-1<b<2,
设c=2a-b
则b=2a-c
以a为x轴b为y轴建立坐标系 把上面的一一画出来 然后用图来找最大值和最小值。。 这样的话应该明白吧。。 不明白的话 我也没办法 呵...
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第一个题:由于是两个动作一个谓语是is一个是do所以两个一起回答时必须用so it is with 而不能用so does或so is
第二个题:用线性规划a-b<0,-1<a<2,-1<b<2,
设c=2a-b
则b=2a-c
以a为x轴b为y轴建立坐标系 把上面的一一画出来 然后用图来找最大值和最小值。。 这样的话应该明白吧。。 不明白的话 我也没办法 呵呵
第三个题:两式相减因式分解的话(a-1)(a-1)(2a+1)然后你自己讨论吧
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Pam is very busy and she doesn’t have a lot of time to spend on her hair,and() 书上答案是:so it is with Ann,为什么不是so does或so is Ann?涉及什么语法知识点?1、若-1<a<b<2,则2a-b的范围是?2、已知a∈R,比较
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