更多"Trees take harmful gas from the air"的相关试题:
[单项选择]Trees take harmful gas from the air, and ______ oxygen (氧气) into the air.
A. let out
B. set off
C. give up
[单项选择]Trees take harmful gas from the air, and ______ oxygen (氧气)into the air.
A. let out
B. set off
C. give up
[单项选择]This passage is most probably take from an article entitled" ______ ".
A. Energy Conservation
B. House Building Crisis
C. Air Pollution Indoors
D. Traps in Building Construction
[单项选择]Where can you see from the air the migration of the mammals （）
A. In the Pribilot Islands.
B. In the Bering Sea.
C. In southern California.
D. In northern Canada.
[单项选择]What gas does not pollute the air
A. Oxygen.
B. Hydrocarbons.
C. Carbon monoxide.
D. Nitrogen oxides.
[单项选择]What lesson might the PR industry take from Ted Turner of CNN
A. American PR companies should be more internationally minded.
B. The American PR industry should develop global communications technologies.
C. People working in PR should be more fluent in foreign languages.
D. People involved in PR should avoid using the word "foreign".
[单项选择]That boys suffer more from air pollution can possibly be justified by the fact that ______.
A. the male have larger bones than the female
B. women can manufacture blood more efficiently than men
C. men usually breathe more deeply than women
D. women breathe as often as men
[单项选择]Air is the mixture of gases in which （ ） the gas is oxyen.
A. not every of
B. not all
C. none of
D. all of
[单项选择]What measure Air Canada will take according to the text
A. It will introduce non-stop service between Toronto and Shanghai.
B. It will replace its 189-seat Boeing 767-300ER service with large 282-seat A340-300 aircraft forever.
C. It will increase the capacity of goods transportation.
D. It will decrease the number of flight.
