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课时作业(二十九) [选修6 Unit 4 Global warming] [限时：30分钟] Ⅰ.单项填空 1．My husband could not be here tonight, but I want to thank you ________ him. A．on behalf of B．stand for C．because of D．for the benefit of 2．We had to ________ a lot of noise when the children were at home. A．go in for B．hold on to C．put up with D．keep up with 3．My friend Mary was very sick with a strange fever, ________， she could neither eat nor sleep. A．as a result B．after all C．at all D．otherwise 4．It's less expensive to buy goods in ________， but you'd better examine the ________ before buying them. A．quantity; quality B．quantity; quantity C．quality; quality D．quality; quantity 5．— Will you go to the exhibition tomorrow? — Yes, I will go ________ it's rainy. A．as if B．even if C．as soon as D．as though 6．The cause of the problem is that as we burn ________—coal, oil, and gas—we pump carbon dioxide into the atmosphere. | 
