Mark the letter A,B,C, or D on your answer sheet to indicate the word or phrase that is closest in meaning to the underlined part in each of the following questions.
During the Great Depression, there were many wanderers who traveled on the railroads and camped along the tracks.
Giải chi tiết:
wanderers =người bộ hành, kẻ lang thang
A. cựu chiến binh
B. ngừoi mới vào nghề
C. kẻ lang thang
D. người cuồng tín
Population growth rates vary among regions and even among countries within the same region.
Around 150 B.C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness.
Biogas can be utilized for electricity production, cooking, space heating, water heating and process heating.