【单选题】Dalton wondered why the heavier and lighter gases in the atmosphere did not separate as oil and water do. He finally concluded that the constituent【C1】______must exist in the form. of【C2】______particl...
【简答题】There are various suggestions why women tend to approximate more closely to the standard language than men do. What do you consider to be relevant factors? Why?
【单选题】Dalton wondered why the heavier and lighter gases in the atmosphere did not separate as oil and water do. He finally concluded that the constituent【C1】______must exist in the form. of 【C2】______partic...