几个问题，谢谢
Many good friends have a lot in _______.
A：similarity
B：difference
C：common
D：usual
答案：C
解释：in common 共有的，公共的
You will get the message ______.
A：not long after
B：not long
C：before long
D：long before
答案：C
解释：before long不久以后
The home team ______ dearly for their defensive errors.
A：cost
B： took
C：paid
D：gave
答案：C
解释：pay for连用。
The doctor came at once in _____ to my call.
A：reply
B：answer
C：hearing
D： listening
答案：in reply to 答复，是固定搭配。
The building which _____________ at present will be used for science
A： is repairing
B：has been repaired
C： is being repaired
D： is repaired
答案：C
解释：现在进行时的被动语态。
The building which _____________ at present will be used for science
A： is repairing
B：has been repaired
C： is being repaired
D： is repaired
答案：C
解释：同上。
Mr. Smith asked Nancy ________ it took him to fly to New York.
A：how soon
B：how often
C：how long
D：how far
答案：C
解释：how long 多久
They are all _________ at the _______ news.
A：exciting; excited
B：excited; exciting
C： exciting; exciting
D：excited; excited
答案：B
解释：excited修饰人，exciting修饰物。
This room is three times _________ that one.
A：the same large
B：larger as
C：as large as
D：almost large as
答案：D
解释：表示倍数的方法。
I hope you would come to my party _________ Saturday.
A：the next
B：the last
C： next
D：last
答案：D
解释：would表示过去，所以用last。
The young man was _________ middle height.
A：with
B：at
C：of
D：on
答案：C
Have you found an answer ________ the question?
A：of
B：for
C：on
D：to
答案：D
解释：the anwer to...表示“....答案/回复”、
We will try again ____________ the failure.
A： in spite
B：in spite of
C： despite of
D：spite
答案：B
解释：in spite of尽管；不管，不顾
She went away ________ saying a word.
A：by
B：without
C：out of
D：as
答案：B
解释：without 没有
He was criticized ________ his mistakes.
A：on
B：with
C：of
D：for
答案：D
解释：for表示原因。
He prefers white cup to _________.
A： red
B：red one
C： the red
D：the red one
答案：D
解释：one指代前面的cup。
My teacher today is not quite __________.
A：his own
B：him
C：himself
D：of his own
答案：C
There are trees on __________ side of the street.
A：any
B：both
C： either
D：every
答案：C
解释：side是单数名词，前面不用any或者every，both表示“两者都”。
Last Saturday ___________________ had a picnic in Beiquan Park.
A：John, Mary and me
B：John, Mary and I
C：John, I and Mary
D： I, John and Mary
答案：B
解释：第三人称与第一人称连用时，第三人称在前。
祝你学习进步，更上一层楼！请记得采纳，谢谢！(*^__^*)
这三个问题
请一一把问题打字出来【摘要】这三个问题【提问】请一一把问题打字出来【回答】 两个企业生产同质产品，且市场需求函数为P=50-5Q，其中Q=Q1+Q2，Q1和Q2分别为两个企业的产量；两个企业的边际成本都为0。【提问】1，如果两个企业合谋，求合谋利润最大化的产量和价格【提问】（2）如果两个企业相互竞争求解古诺均衡中的价格和每个企业的产量。（3）解释古诺模型中的总产量与卡特尔模型中总产量的区别。【提问】利润R=销售收入-生产成本=Q*P-TC=6750P-50P^2-12000-0.025*(6750-50P)^2整理出一个关于P的一元二次方程，再求最值就是利润最大化价格。再代入需求函数得最大化产量，最后带入利润方程得最大化利润。结果你自己算算吧【回答】我不会老师，这个是我女朋友的题，我都没学过，我女朋友是泰国人她也写不明白[左捂脸]【提问】难怪了，我们这里的题库没有搜寻到，然后找了一个类似的。因为我也不是专业人员，我只是一个负责搬运档案的人。【回答】那咋办[泪奔]【提问】十分抱歉，你可以上一些需要花大价钱的图进去做这个题。【回答】我不知道在哪里可以做这个题【提问】你女朋友是学什么专业的，然后你就去。然后去淘宝专业+然后咨询服务。【回答】不过可能价格会比较偏高。【回答】
