【单选题】The Heckscher-Ohlin theory predicts that t he opening of trade between a land-abundant country and a labor-abundant country should result in : a. higher rents and wages in both countries. b. lower ren...
【简答题】用所给动词的适当形式填空。 l. When I was crossing the street yesterday, I saw an old man _____ (lie) on the street. 2. He is doing his best _____ ( learn) how to swim. 3. All the Chinese people were _____(exci...