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

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions from.
The icebox became a fixture in most homes and remained so until the mechanized refrigerator replaced it in the 1920’s and 1930’s.




A.substance
B.mechanical device
C.commonplace object
D.luxury item

What does the writer say about the future of communication?




A.We can't know what the most popular social media will be.
B.Microchips will become faster.
C.We won't need devices like smartphones.
D.We won't use the internet as much.