The word “They” refers to
Giải bởi Vietjack
C
Từ “They” ám chỉ đến
A. than đá và gỗ
B. các nguồn nhiên liệu chính
C. khí tự nhiên và dầu
D. các nước công nghiệp hóa
Dẫn chứng: In 1910, natural gas and oil firmly replaced coal as the main source of fuel because they are lighter and, therefore, cheaper to transport. They burned more cleanly than coal and polluted less.
=>Chọn C
What can be inferred about the White House from the information in the second paragraph?
According to the author, the fact that more full-time students are working for pay ______.
Research studies have shown that pressures put on students nowadays are ______.
Why does the passage begin with a description of the properties of calcium nitrate?
According to the passage, now that scientists know that unusual neurons in certain people are the cause of migraines, they
