如果两个相似三角形对应中线的比是9：4，那么它们的面积比为（ _爱下问搜题

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问题选择题

如果两个相似三角形对应中线的比是9：4，那么它们的面积比为（　　）

A．3：2

B．81：16

C．16：81

D．2：3

答案

答案：B

不定项选择

甲公司为国有独资公司，乙公司为甲公司开办的子公司，1999年，甲公司出资60%、乙公司出资40%，投资创办丙有限责任公司，甲公司一办公室主任张某兼任丙公司的董事长。设乙公司对外负债80余万元无力偿还，甲公司对此债务应否承担责任

A．甲公司不承担责任

B．甲公司应承担全部责任

C．甲公司应承担主要责任

D．甲公司应承担次要责任

完形填空

阅读下面短文，从短文后所给各题的四个选项(A、B、C和D)中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
To his parents’ disappointment, Andy was born with a disability. The two sides of his brain were not joined 21  to each other. The right side of his body could not   22   with the left. At age three, it was 23  for him to walk, speak or play. He could only 24 a few words and walk slowly 25  someone held each of his hands.
Then came the 26 struggle. He attended an all-day health center 27  he was enrolled for every type of treatment imaginable. He struggled, sometimes 28  , to get stronger. Andy hated   29 when his parents would leave him there in the mornings.   30  , they believed that he would grow up to live a normal and healthy life. They believed it for themselves and for Andy.
It 31  . Today Andy is a successful 13-year-old high school student. His progress has been nothing short of extraordinary. He receives special help with a few things, but 32 his friends in all the activities he loves. Andy has 33 enormous difficulties to move from adversity(困境) to 34 .
Ask yourself, "What are the seeds of strength    35  in my struggles today? If I get up when I fall, what will that make possible tomorrow?"
"Overnight success" is the    36  of years of determination and continued learning. Victory is possible for    37  who decide it is their   38  . They’ll find the path    39___ their dream. However, they will accept hard times as the adversity that will foster their strength, growth and skills to attract the victory they    40  .

C．particularly

C．communicate

B．Furthermore

C．takes part in

D．participates in