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A.number
B.mount
C.deal
D.amount
答案
更多“The ___ of oxygen in the air rises, and at last the air becomes breathable.”相关的问题
第1题
A.insist
B.consist
C.constitute
D.institute
第4题
A.is consisted of
B.is made from
C.is composed of
D.consists in
第5题
A.A videotape.
B.A book.
C.A picture.
D.An oxygen tank. Passage Three Questions 32 to 35 are based on the passage you have just heard.
第7题
根据以下内容回答：
A. The oxygen level in the water.
B. The angle of the treadwheel.
C. The weights on the divers.
D. The temperature of the water.
第8题
The oxidation of the decayed dead algal bodies can't ______ .
A．lower the amount of oxygen in the fiver water
B．make the water taste badly
C．make the water unsuitable for human consumption
D．make the bacteria dead
第9题
