“特别能吃苦，特别能战斗，特别能攻关，特别能奉献”的航天精神_爱下问搜题

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问题选择题

“特别能吃苦，特别能战斗，特别能攻关，特别能奉献”的航天精神，正是我国民族精神的集中体现。之所以要弘扬这种民族精神，是因为它[ ]

①是一个民族生命力、创造力和凝聚力的集中体现

②是一个民族赖以生存和发展的精神支柱

③能促进全体人民始终保持昂扬向上的精神状态

④渊源于中 * * 五千年的文明史，植根于中国特色社会主义实践

A．①②③

B．①②③④

C．②③④

D．①③④

答案

答案：B

问答题

在图6-92所示的轮系中，已知各轮的齿数为z₁=20，z₂=30，z_2’=50，z₃=80，n₁=50r/min，求n_H的大小和方向。

完形填空

完型填空(共20小题;每小题1.5分, 满分30分)
阅读下面短文，从短文后各题所给的四个选项(A、B、C、D)中，选出可以填入空白处
的最佳选项，并在机读卡上将该选项涂黑。
There is a small shop about 200 meters from where I live that sells groceries, meat and other basic necessities. About 10 yearsa ago, there was a beggar who would go into the shop every day and ask the owner for a   21 . The owner, 22  he would love to help, simply didn’t have any jobs availabe, so he kept   23  the man’s office.
This situation continued   24  for a few months, until the owner   25  to give the homeless man a job which   26  sweeping outside the shop. Every single day form 5 a.m, the homeless man was there doing the very   27  he could for the   28 , making it the community’s favourite, even though it did earn him pennies. 29 , the owner saw how good a job the man was doing and gave him a job working   30  a cashier(收银员). He was watched closely to make sure that he didn’t   31  any of the money received from the sales. He was still homeless, after all. The homeless man did a/an   32  job as a cashier for over 2 years, and did such a good job that he was promoted to   33  the finances for the whole shop.
To my   34 , this was the arrangements up until 2 years ago, when the owner   35 . In his will, he only had one   36 , to give the whole shop to the now stable, “homeless” man. Now, I could walk into that shop and see him working as hard as   37 , with his own business that is still   38  and active 10 years after getting his job as a sweeper.
From this story, we can probably get the inspiration: work hard and give everything your best effort, even if it isn’t your   39  situation, it very well may turn out to   40  some day in the future.

B．considering

B．Fortunately

C．passed away