Directions：There are 10 incomplete sentences in this section．For each sentence there are four choices marked A，B，C and D．Choose the one that best completes the sentence．Then mark the corresponding letter on the Answer Sheet with a single line through the center．
11．My advice to you，sir，is that manuscripts on one side only．
A．is written B．be written
C．are written D．will be written
12．When people speak of solar energy，they think only of the sun's rays heating a home or electricity from the sun．
A．derive B．by deriving C．of deriving D．to derive
13．They hoped that the prisoner would be released through the of the president himself．
A．interference B．convention C．interaction D．concession
14．It was the training that he had as a young man made him such a good engineer．
A．that B．has C．what D．later
15．The quality of teaching should be measured by the deGREe which the students'potentiality is developed．
A．to B．of C．with D．in
16．I would have come to see you had it been possible，but I so busy then．
A．had been B．were C．was D．would be
17． hundreds of pieces of litter．
A．Were lying beside the road
B．Were beside the road lying
C．Beside the road lying were
D．Lying beside the road were
18．We want such materials can bear high temperature and pressure．
A．that B．as C．what D．which
19．Complicated it is，the problem can be solved in only two hours with an electronic computer．
A．though B．even though C．even if D．as
20． bravery，the PLA men held back the enemy's fifth attack．
A．By honour of B．By means of
C．By way of D．By virtue of
参考答案：
11. B 12. C 13. A 14. A 15. A 16. C 17. D 18. B 19. D 20. D
