问题
名词解释
无效养分
答案
参考答案：
是指当季作物不能吸收的养分，包括几乎所有的矿物质中的养分和部分难分解的有机物质中的养分。
搜题请搜索小程序“爱下问搜题”
无效养分
参考答案：
是指当季作物不能吸收的养分，包括几乎所有的矿物质中的养分和部分难分解的有机物质中的养分。
| 从方框中选择最佳选项完成对话，有两项多余。 | |
W: I'm doing my homework, Dad. M: Doing your homework? You don't usually have any homework. W: Yeah. But we have a new teacher this week. M: A new teacher? 2_____ W: He is tall and he has short straight hair. M: Does he teach you English? W: 3_____ He teaches us math. He is a good teacher. M: 4_____ W: Yes. He is also very strict with us. M: Is there much homework today? W: 5_____ I can finish (完成) it soon. |