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右图为窦店村综合发展生态工程示意图。请据图回答： 从生态系统的成分来看，食用菌属于（），沼气可以作为一种清洁能源用于生产生活中，其中的能量来自于生产者通过（）固定的太阳能。
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举一反三
【单选题】We were at the end of the hall and could not hear the speech because his vioce was ______ soft to be heard.
A.
more
B.
so
C.
too
D.
much
【简答题】you | at | this | Frankie | home | and | afternoon | wereLaura: ______ ______ ______ ______ ______ ______ ______ ______?Maggie: We were at the movies. We saw Space Frontiers.
【单选题】听力原文：W: Hi, John. I haven't seen you since we were at the university. M: That's right. You took business administration, didn't you'? Q: What is the relationship between the two speakers? (4)
A.
They were schoolmates.
B.
They are very good friends.
C.
They were both businessmen years ago.
D.
They are professors of a certain university.
【简答题】1. Chris: ______ at home last night?Luis: No, I was at my office. I was there until 11:00.2. Laura: Were you and Frankie at home this afternoon?Maggie: No, __________ . We were at the movies. We saw A...
【单选题】Laura: Were you and Frankie at home this afternoon? Maggie: No, we ____________. We were at the movies. We saw Avalanche
A.
was
B.
were
C.
wasn’t
D.
weren’t
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