毛白杨通常采用（）等方式繁殖育苗。
A.播种
B.埋条
C.插根
D.嫁接
参考答案：A, B, C, D
看图补全句子。
1. They are pretty________. I like them.
2. It's ________ in Moscow.
3. The______ is heavy. I can't carry it.
4.I like _________. What about you?
5. I have a cool_________. It's my birthday gift.
关于百兆以太网的描述中，正确的是( )。
A．只支持屏蔽双绞线与光纤
B．协议标准是IEEE 802.3u
C．通常称为交换式以太网
D．介质独立接口缩写为GMII
They are pretty________. I like them.
It's ________ in Moscow.
The______ is heavy. I can't carry it.
I like _________. What about you?
I have a cool_________. It's my birthday gift.