1 . —How long did David work here?
—For half of a year, but he didn’t leave much __________ on us.

A．expression

B．instruction

C．conclusion

D．impression

2 . When he brings his speech to a nice___________(conclude), Whaley invites the rest of the class to praise him. （所给词的适当形式填空）

3 . He wins the Nobel Prize for his outstanding _________to physics.

A．contribution

B．conclusion

C．addition

D．explanation

4 . From what you say, I draw a __________(结论) that she is not the right person for the job.

5 . What c_____________（结论）do you draw from the evidence? Please tell me at once.

6 . Over the years I’ve come to the __________ (conclude) that she’s a very great educator devoting her whole life to this career.

7 . After much discussion we came to a ________ (conclude) satisfactory to all experts.   (所给词的适当形式填空)

8 . This new technology will make a great _______ to the development of Chinese communication industry.

A．comprehension

B．contribution

C．composition

D．conclusion

9 . All of us want to know if the _____________(conclude)is true.

10 . It’s better to think twice before we draw a __________ (结论).（根据汉语提示单词拼写）