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问题 多项选择题

防治兰花炭疽病，可以采取（）等措施。

A.选育抗病品种

B.剪除病叶

C.刮去枝干上的病班并涂药保护

D.发病前喷药保护

E.适当喷甲胺磷药剂

答案

参考答案：A, B, C, D

单项选择题

Speaker A. Mr. Carson, Dr. Brown will have to change your appointment to tomorrow at the same time. He's still waiting for a flight out of New York.Speaker B: ______

A．Oh, well, thank you for calling. I'll see him in his office then.

B．I'm sorry to hear that his flight is delayed.

C．But are you sure he will be in his office at that time

D．Yes. That's quite understandable.
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多项选择题

从抗战结束到新中国建立前，中 * * 党关于土地问题的文件有（）

A.《五四指示》

B.《兴国土地法》

C.《共同纲领》

D.《中国土地法大纲》
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