甲乙两车从相距240千米的A、B两地同时出发相向而行，经过53小时_爱下问搜题

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问题解答题

甲乙两车从相距240千米的A、B两地同时出发相向而行，经过

5

3

小时相遇．甲车平均每小时行72千米，乙车平均每小时行多少千米？

答案

240÷

5

3

-72，

=144-72，

=72（千米）；

答：乙车平均每小时行72千米．

完形填空

Joy in the journey
If you have ever been discouraged because of failure, please read on. For often, achieving what you set out to do is not the important thing. Let me explain.
Two brothers decided to dig a deep hole behind their house. As they were working, a couple of older boys stopped by to      . “What are you doing?” asked one of the visitors. “We plan to dig a hole all the way through the     !” one of the brothers volunteered      .
The older boys began to     , telling the younger ones that digging a hole all the way through the earth was      . After a long silence, one of the        picked up a jar full of spiders, worms and many other kinds of insects. He      the lid and showed the wonderful      to the scoffing（嘲笑的）visitors. Then he said quietly and     , “Even if we don’t dig all the way through the earth, look at what we have found      the way!”
Their goal was far too ambitious, but it did cause them to dig. And that is      a goal is for — to cause us to move in the      we have chosen, in other words, to keep us     ! But not every goal will be fully     . Not every job will end     . Not every hope will come to pass. Not every love will last. Not every dream will be     . But when you fall      of your aim, perhaps you can say, “Yes, but look at what I found along the way! Look at the wonderful things      my life because I tried to do something!” It is in the digging      life is lived. And I believe it is the joy in the journey, in the end, that truly      .

D．impatiently

D．interesting

B．confidently

C．surprisingly

D．successfully

A．breaking into

C．coming into

单项选择题

男性，18岁，自幼患支气管哮喘，每于春暖花开时发病，用舒喘灵气雾剂吸入治疗能缓解症状，近1周来又有哮喘急性发作，为探究其病因宜进行下列哪一项检查

A．胸部X线摄片

B．纤维支气管镜检查

C．支气管碘油造影

D．血清特异性IgE抗体测定

E．肺功能检查