问题
选择题
如图是四种不同生物的细胞结构图，关于它们结构的比较错误的是（ ）
A．四种细胞都有细胞膜、细胞质
B．与B不同，C、D细胞中的能量转换器只有线粒体
C．该四种细胞为了获得生活所需的能量都必须消耗有机物和氧
D．A、C、D生活所需要的有机物都来自于B类生物
答案
答案：C
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如图是四种不同生物的细胞结构图，关于它们结构的比较错误的是（ ）
A．四种细胞都有细胞膜、细胞质
B．与B不同，C、D细胞中的能量转换器只有线粒体
C．该四种细胞为了获得生活所需的能量都必须消耗有机物和氧
D．A、C、D生活所需要的有机物都来自于B类生物
答案：C
When I was young，my father told me that little acts of kindness may give one great happiness. Since then I have always tried to help people in 16 . One hot summer afternoon, I was 17 down the highway to New York when another car suddenly 18 into my lane(车道). My car was in the far right lane，so it ran onto the roadside. As a(n) 19 driver，I moved my car quickly and skillfully back onto the highway without causing any accident. I was 20 with that driver，but I thought that he just did not pay attention to the lane change, and he 2l did not do that on purpose(故意).The car ran away 22 after cutting me off. Very soon it disappeared from sight. After a while，I came around a curve(弯道) and found the 23 car. The driver was walking along the roadside. He was an elderly man and looked 24 . With no telephone nearby and the nearest services twenty miles away. I decided to 25 and see what the problem was. The man’s car had a flat tire(瘪胎). Although he had a spare tire，he had nothing to work with. I decided to 26 him. I changed the tire for him and allowed him to sit in my Air-conditioned car while I did it. Fifteen minutes later，I 27 the work. I was hot and tired，but I really felt 28 after an act of kindness to the man who had earlier 29 my car ran off the road. You can really enjoy great 30 from kindness acts, so always lend your hands to others in trouble.
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