Obama, _____ president of the USA, won _____ Nobel Prize for Pease in 2009.
| A．\; a | B．a; the | C．\; the | D．the; a |
People’s working efficiency usually decreases more or less when the temperature _________ 35℃ or even higher.
| A．approaches | B．raises | C．draws | D．drops |
It is widely accepted reported in the western media that the drug ______ is now becoming a leading cause of teenager crimes.
| A．adoption | B．abuse | C．appreciation | D．appeal |
“Boys and girls, you are asked to submit a(n) _______ of about 100 words of the lecture given by Professor Yu tomorrow” , said the teacher.
| A．impression | B．report | C．abstract | D．conclusion |
The windows _____, so you need not wash it again.
| A．is washed | B．was washed | C．have been washed | D．will be washed |
She doesn’t speak ____ her friend, but her written work is excellent.
| A．as well as | B．so often as | C．as much as | D．as good as |