问题 填空题

在进行插条繁殖时,如果在枝条上保留一些正在生长的芽或幼叶,扦插枝条就容易生根,这是因为()

答案

参考答案:芽和幼叶能产生生长素,促进扦插的枝条生根

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     以下标有题号的每一行均有一个错误,请找出,并按下列情况改正:
此行多一个词:把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。
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     Today is Sunday. I′ve  been in Canada for two months.           
This is the first time that I′ve been away my family for such a  
long time. With the help of Katia, a roommate of me, I′ve          
soon got used to live without my parents around. Katia, like        
many other Russian girls, are nice and lively. We became           
friends shortly after we meet each other. Although her English     
is a little hardly to understand, we enjoy chatting  and we         
usually talk a lot about our own family. We're both surprised      
that Chinese culture or Russian culture are so different. Now,      
we are planning a small party for the next Sunday. There, Katia    
will introduce me to some of her friends, one of who has been       
to China several times. I just can't wait.                       
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