问题
选择题
原核细胞与真核细胞最明显的区别在于：[ ]
A．有无核物质
B．有无细胞质
C．有无核膜
D．有无核酸
答案
答案：C
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原核细胞与真核细胞最明显的区别在于：[ ]
A．有无核物质
B．有无细胞质
C．有无核膜
D．有无核酸
答案：C
| 用方框中所给词的适当形式填空 | |
2. After I did the dishes, I _____ the floor. 3. I can see what you _____. 4. I want _____ you for help. 5. Why not _____ the dirty clothes? 6. They invited the readers _____ a meeting. 7. It took me half an hour _____ dinner. 8. The backpack isn't hers. It's _____. 9. If you keep making this kind of mistake, our teacher will _____ angry. |