A at constant rate
B in a few years
C an the weight of the atmosphere
D within the troposphere
E oxygen and nitrogen
F it consists of electrically charged particles called irons which from sun
The major parts of permanent gases are ______.
第1题
A.rate
B.ratio
C.reasonable
D.rationalize
第2题
Many people complain of the rapid ________ of modern life.
A) rate
B) speed
C) pace
D) growth
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