A mediocre student who gets low grades will have trouble getting into an Ivy League college.
Giải chi tiết:
mediocre= tầm thường
A. trung bình
B. lười nhác
C. khờ dại
D. siêng năng
Biogas can be utilized for electricity production, cooking, space heating, water heating and process heating.
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.