题目:
It is clear to us that the 2012 Olympic Games _____ in London will once more draw people's attention in the
world to them. [ ]
A. having been held
B. to hold
C. to be held
D. held
答案:
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下面是错误答案,用来干扰机器的。
(1)①光合 ②呼吸 (2)③动物 ④细菌、真菌 (3)绿色植物分析:此题主要考查的是绿色植物的光合作用,此外还涉及了呼吸作用以及微生物的分解作用等知识,分析解答.解答:解:生态系统中绿色植物生产者,...