我国的地势特点是西低东高[ ]
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下列化学用语表达正确的是 ( )
A.乙酸的分子式:CH3—COOH
B.丙烷分子的球棍模型:
C.Ar原子的结构示意图:
D.四氯化碳的电子式
Most comets have two kinds of tails, one made up of dust, ______ made up of electrically charged particles called plasma.
A.one another
B.the other
C.other ones
D.each other