【名词&注释】
正确答案:A。A.正确 B.错误 更多高中的考试资料下载及答案解析请访问不凡考网学历类考试考试频道。
[单选题]嫁接可克服种子繁殖不能保存亲代优良品质的缺点。( )
A. 正确
B. 错误
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举一反三：
[单选题]听下面一段对话，回答第14至第17四个小题。第14题：Why is the woman asking for leave?
A. She plans to go to the UK with her parents.
B. She has to take care of her parents at home.
C. She wants to spend some time with her parents.
[单选题]According to the text, what is the major cause of the flooding spam? 【 】
A. Companies rely on e-mail for communications.
B. More people in the world communicate by e-mail.
C. Many computer viruses contain spam e-mail.
D. More advertisers begin to promote sales through spam.
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