问题
单项选择题
下列属于原核细胞型微生物的特征之一的是（）。
A．单细胞，结构简单
B．细胞器不完善
C．二分裂方式繁殖
D．有细胞壁
E．对抗生素敏感
答案
参考答案：B
解析：
原核细胞型微生物的特点是细胞器不完善，只有核糖体。
搜题请搜索小程序“爱下问搜题”
下列属于原核细胞型微生物的特征之一的是（）。
A．单细胞，结构简单
B．细胞器不完善
C．二分裂方式繁殖
D．有细胞壁
E．对抗生素敏感
参考答案：B
解析：
原核细胞型微生物的特点是细胞器不完善，只有核糖体。
| 阅读理解 | ||||||||||||||||
| We wanted to know how students at our school spend money. So we made some questions to ask our classmates. First, we asked them how much money they spent in one month. Then we asked how much money they spent for things like drinks, music, books, movies, computer games and other things. Our math teacher helped us make a graph of our classmates' answers. Then we asked them to think of their expenses last year. It was of course a bit harder, but we got their answers at last. We made another graph and compared two graphs.
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1. What do students sp end most of their money on? | ||||||||||||||||
| A. Books. B. Computer games C. Movies. D. Drinks and snacks. | ||||||||||||||||
| 2. What does "expense" mean? | ||||||||||||||||
| A. 出口 B. 开支 C. 昂贵的 D. 零花钱 | ||||||||||||||||
| 3. Which expense for 2007 was higher than 2006? | ||||||||||||||||
A. Movies |
4%(2007)