Câu 44: Why does the author mention "gas" and "dust" in line 3?A. They interfere with accurate measurement of the solar constant.B. They are found in varying concentrations.C. Scientific equipment is ruined by gas and dust.D. They magnify the solar constant.

WHY DOES THE AUTHOR MENTION "GAS" AND "DUST" IN LINE...

Tiếng Anh Đề thi thử THPT Quốc gia 2018 môn tiếng Anh lần 1 trường THPT Thủ Đức, Hồ Chí Minh có đáp án

Câu 44: Why does the author mention "gas" and "dust" in line 3?

They interfere with accurate measurement of the solar constant.

They are found in varying concentrations.

Scientific equipment is ruined by gas and dust.

They magnify the solar constant.