下图是一个农业生态系统模式图，关于该系统的叙述，错误的是（）。
A．微生物也能利用农作物通过光合作用储存的能量
B．沼气池中的微生物也是该生态系统的分解者
C．沼渣、沼液作为肥料还田，使能量能够循环利用
D．多途径利用农作物可提高该系统的能量利用效率
参考答案：C
解析：
由图可知：沼气池中的某些细菌可利用农作物通过光合作用储存于秸秆中的能量，A项正确；沼气池中的微生物将有机物分解，转化成简单的无机物，属于分解者，B项正确；生态农业中增加了对能量的利用途径，提高了能量的利用率，D项正确；生态系统中的能量只能沿食物链单向传递，而不能进行循环，C项错误。
Every country has its own culture. Even though each country uses doors, doors may have 50 functions and purposes which lead to 51 differences. When I first came to America, I noticed that a public building had two different 52 and they had distinct functions. You have to push the door with the word “ PUSH ” to go out of the building and to pull the door with the word “PULL” to 53 the building. This was new to me, because we use the 54 door in South Korea. For quite a few times I failed to go out of a shopping centre and was embarrassed. The way of using school bus doors was also 55 to me. I used to take the school bus to school. The school decided that when the driver opened both the front and back door. Students who were getting off the bus should get off first, and students who were getting on should get on 56 in South Korea. We do not need to wait for people to 57 . One morning I hurried to the bus, and when the bus doors opened, I 58 tried to get on the school bus through the front door. All the students around looked at me. I was totally 59 , and my face went red.
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