What does the author mainly discuss in the text?
A. Technology. B. Sustainability.
C. Ethanol energy. D. Environmental protection.
15.A.areB.isC.doD.does
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What ________ the notice________?A. is, sayB. is, saidC. did, sayD. does, say
________ your mother ________ some cleaning on Sundays?A.Does…doesB.Do…doesC.Does…do
Mr.Johnson insisted that the problem worthy of attention ________(讨论)at the meeting.(discuss)
4.—_________ Mike________ his homework in the evening?—No,he doesn't.A. Do;doesB. Does;doC. Do;doD. Does;does
Which of the following may illustrate the difference between "competence" and__________ "performance"? A.What a person "knows" and what he/she "does". B.What a person "can do" and what he/she "does". C.What a person "does" and what he/she "knows". D.What a person "does" and what he/she "can do".
I think I managed to 【grasp】 the main points of the lecture.A. understand B. cover C. prove D. discuss