79.Justin purchased a Polar Express train set from Lionel Trains.He paid $240 for the set and received consumer surplus of $125.What was Justin's willingness to pay for the train set?A)$115B)$240C)$250D)$36584.Tavist allergy pills sell for $25 a box.

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79.Justin purchased a Polar Express train set from Lionel Trains.He paid $240 for the set and received consumer surplus of $125.What was Justin's willingness to pay for the train set?A)$115B)$240C)$250D)$36584.Tavist allergy pills sell for $25 a box.
79.
Justin purchased a Polar Express train set from Lionel Trains.He paid $240 for the set and received consumer surplus of $125.What was Justin's willingness to pay for the train set?
A)
$115
B)
$240
C)
$250
D)
$365
84.
Tavist allergy pills sell for $25 a box.Steve,Brian,and Toby are willing to pay $33,$27,and $19,respectively,for a box of Tavist.What is the total consumer surplus for Steve,Brian,and Toby?
A)
$16
B)
$10
C)
$4
D)
$60

有几道选择题属于高考中的介词题，有的是固定搭配，如2 be after是有追捧的意思，有的是句型成份的题，如3 主语从句中that绝对不能省，因为句子是不能作主语的,要用that引导，这些问题在高三复习中详细讲解过，建议买语法书，五三也行，其中系统讲解，而固定搭配的题就那么几种，要在平时做题中积累...

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有几道选择题属于高考中的介词题，有的是固定搭配，如2 be after是有追捧的意思，有的是句型成份的题，如3 主语从句中that绝对不能省，因为句子是不能作主语的,要用that引导，这些问题在高三复习中详细讲解过，建议买语法书，五三也行，其中系统讲解，而固定搭配的题就那么几种，要在平时做题中积累

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选AC，谢谢。

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