问题
选择题
下列物质进出细胞的方式中，变形虫有而蓝藻没有的是[ ]
A．主动运输
B．胞吞和胞吐
C．协助扩散
D．自由扩散
答案
答案：B
搜题请搜索小程序“爱下问搜题”
下列物质进出细胞的方式中，变形虫有而蓝藻没有的是[ ]
A．主动运输
B．胞吞和胞吐
C．协助扩散
D．自由扩散
答案：B
| 阅读小天地。根据短文内容，完成下列表格。 | |||||||||||
| Hello, I am Nina. I go to school from Monday to Friday. We have four classes in the morning and two in the afternoon. After school, I have many activities. I play ping-pong on Mondays. I play basketball on Tuesdays. I listen to music on Thursdays. I do my homework in the evening. I often read books and watch TV on Saturdays. I play computer games on Sundays. I love weekends. How about you?
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