Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Songdo International Business District was started from _________ in 2005 and is still being built for the future.
A.air
B.water
C.paper
D.scratch

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
If we have solar _________ on our roofs, we’ll be able to generate our own electricity.
A.panels
B.tables
C.boxes
D.stairs

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The main goal of _________ planning is providing a healthier environment for people living in the city.
A.urban
B.village
C.rural
D.suburban

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
I hate travelling during the rush hour. The trains and buses are all _________.
A.overcrowded
B.optimistic
C.detected
D.advanced

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The government needs to solve the pollution problems to make the city _________.
A.overcrowded
B.harmful
C.polluted
D.liveable

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Thanks to various _________ installed in every home and public place, the company can predict probable disasters, identify their locations and send a rescue team to help the people in danger.
A.papers
B.documents
C.warnings
D.sensors

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The main function of his company is to deal with urban _________ problems to make the city greener, cleaner and more livable.
A.social
B.environmental
C.political
D.cultural

Đặc điểm nào sau đây là đúng khi nói về xinap?
A.Các xináp không có các chất trung gian hóa học.
B.Mỗi xináp có thể có nhiều loại chất trung gian hóa học.
C.Mỗi xináp chỉ có một loại chất trung gian hóa học.
D.Chỉ có một loại chất trung gian hóa học trong tất cả các loại xináp.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The most common _________ sources of energy are the wind and the sun.
A.non-renewable
B.fossil
C.renewable
D.liveable

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Pollution and heavy traffic are common problems in _________ cities.
A.rural
B.remote
C.overcrowded
D.quiet