Air pollution is getting ________ serious in big cities in the world.
A.more and more
B.the most and the most
C.most and most
D.the more and the more

The _________ is the air, water, and land in or on which people, plants and animals live.
A.resource
B.pollution
C.habitat
D.wilderness

If your younger brother has done something well, give him _________ .
A.wishes
B.promises
C.compliments
D.advices

The disappearance of one or several species may result in the loss of _________ .
A.conservation
B.exploitation
C.diversity
D.biodiversity

A.extinction
B.construction
C.endangered
D.wonderful

A.animals
B.characters
C.imagines
D.advantages

A.chewed
B.survived
C.enjoyed
D.noticed

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Why don't you _____ these photos into your computer, because then you would have your own digital copies.
A.change
B.scan
C.put
D.give

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Although the ______ construction costs of environmentally friendly houses are very high, they are very economical in the long run.
A.first
B.introductory
C.initial
D.opening

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
His brother refuses to even listen to anyone else's point of view. He is very _______.
A.open-minded
B.absent-minded
C.narrow-minded
D.kind-hearted