相关习题
 0  17604  17612  17618  17622  17628  17630  17634  17640  17642  17648  17654  17658  17660  17664  17670  17672  17678  17682  17684  17688  17690  17694  17696  17698  17699  17700  17702  17703  17704  17706  17708  17712  17714  17718  17720  17724  17730  17732  17738  17742  17744  17748  17754  17760  17762  17768  17772  17774  17780  17784  17790  17798  151629 

科目: 来源: 题型:

---I feel the house shaking.

----So do I .It ___ must be sign of an earthquake most probably. Let’s hurry to leave here.

A. ought  to B. could  C. can  D. might

查看答案和解析>>

科目: 来源: 题型:

Parts of graduations failed to seek a job without experience ,though they are _____ to get one.

A. fighting        B.looking forward    C. dying            D.hoping

查看答案和解析>>

科目: 来源: 题型:

_____ you keep on working hard, I don’t mind whether you get  good marks in your class.

A. As long as         B. As soon as           C. As well as      D.as far as

查看答案和解析>>

科目: 来源: 题型:

----- This is the second time I____ pictures with my own camera.

 ----- It’s time that you ____ a picture of me.

A. had taken; took      B. have taken; took    C. will take; will take D. took; have taken

查看答案和解析>>

科目: 来源: 题型:阅读理解

When Babbage was working at Cambridge, a new idea occurred to him. He wanted to construct a calculating machine to work out the solutions(解法)to maths problems not only with correctness but also with a speed beyond the power of any human mind. His machine could solve problems involving(涉及)long rows of figures in one continuous operation(运算).

    In 1822 Babbage exhibited his invention and won a prize from the government. After that, he immediately started to work on a larger machine designed to solve more difficult problems. Although he received some money left by his father, the money was not enough to support his design. He wrote to the government about his plan and was given £2500 to start with, a sum worth much more in those days than it is now.

    Babbage continued his work in London for four years. Then his health broke down, and he had to take a long holiday abroad. When he returned to London in 1828, he was at the end of his resources. Many bills remained unpaid. His chief assistant and co-workers quarreled with him and left with many expensive tools. For one year no work was done. During this period, Babbage, whose mind was always active, suddenly thought of a completely new idea for the machine. He rushed to meet the government officials to explain his new idea. But this time, they were unwilling to help him. For eight years, they refused to say whether they wanted the machine or not, and their final answer was “No.”

    From 1828 to 1839, Babbage held the position of professor at Cambridge very successfully. But his greatest work was the unfinished calculating machine which stood covered in dust in his house. It was the beginning of the modern computer.

60.The machine Babbage designed would solve difficult maths problems _________.

   A.in one operation with few mistakes

    B.in more than one operation without any mistakes

    C.in more than one operation with slight mistakes

    D.in one operation without any mistakes

61.Babbage failed to continue his research work in 1828 mainly because _______.

   A.he was in poor health                B.he almost ran out of money

   C.his co-workers argued with him          D.he spent all his money on his bills

62.Babage explained his new idea to the government officials, expecting that _________.

   A.they would agree to his plan              B.they would pay for his new idea

   C.they would support him with money     D.they would exhibit his new design

63.From the passage, we can infer that __________.

    A.Babbage failed to be a famous scientist at Cambridge

    B.Babbage always had new ideas but gave them up easily

    C.Babbage always needed support from the government officials

    D.Babbage was the first designer of the modern computer

查看答案和解析>>

科目: 来源: 题型:

He hesitated for a moment before kicking the ball, otherwise he ____ a goal.

    A. had scored                       B. scored

    C. would score                      D. would have scored

查看答案和解析>>

科目: 来源: 题型:

 —Have a good rest ; you need to          your energy for the football match this afternoon .

    —Thanks a lot .                   

   A. leave                     B.save                   C.hold                   D.get

查看答案和解析>>

科目: 来源: 题型:

---How can she forget such an important matter?

---Oh , it’s___her to forget. She may forget everything except her name.

A. typical of      B. typical for         C. common of           D. not like

查看答案和解析>>

科目: 来源: 题型:

  It shames me to say it, but I told a lie when ___ at the meeting by my boss.

    A. questioning                                    B. having questioned

    C. questioned                                     D. to be questioned

查看答案和解析>>

科目: 来源: 题型:

We ____ last night , but we went to the cinema instead .

A . must have studied B . might study C . should have studied D . would study

查看答案和解析>>

同步练习册答案