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.
We really appreciate your help, without which we couldn’t have got our task done in time.
Giải chi tiết:
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.