(48) ______




A.what
B.if
C.whether
D.how

(46) ______




A.adventurously
B.adventurous
C.adventure
D.adventurer

Which of the followings affect an ecosystem as the whole?




A.Groundwater contamination
B.Air contamination
C.Soil contamination
D.Surface water contamination

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Neil Armstrong was the first astronaut to step on ________ moon in 1969.




A.an
B.the
C.no article
D.a

Do you know the man who sat next to me at Nam’s birthday party last night?




A.You know the man who sat next to me at Nam’s birthday party last night, won’t you?
B.You know the man who sat next to me at Nam’s birthday party last night, don’t you?
C.You know the man who sat next to me at Nam’s birthday party last night, doesn’t you?
D.You know the man who sat next to me at Nam’s birthday party last night, didn’t you?

Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
The problems of traffic congestion and pollution will continue to grow if the government does not make any measures to reduce the negative effects of urbanization.




A.traffic congestion
B.to grow
C.make any measures
D.effects

I saw him hiding something in a_______ bag.




A.small plastic black
B.black small plastic
C.small black plastic
D.plastic small black

Having a best friend to confide in can bring a positive effect on our ______health.




A.emotional
B.emotionally
C.emotion
D.emotionless

Following the accident, he was officially accused of ________driving.




A.reckless
B.careful
C.hurry
D.responsible

(38) _______




A.whom
B.which
C.who
D.what