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问题 选择题

温室栽培的茄果类蔬菜，因花粉发育不良，影响传粉受精，如果要保证产量，可采用的补救方法是[ ]

A．喷洒N肥

B．提高CO2浓度

C．喷洒P肥

D．喷洒生长素类似物

答案

答案：D

选择题

— I heard that more than 500 people were killed in ten days during that Cholera outbreak.

— Yes, _____ news came as _____ shock to us. [ ]

A. the; /

B. the; a

C. /; a

D. /; /

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单项选择题

“拉手舞”是哪个民族的传统舞蹈？（）

A.彝族

B.傣族

C.高山族

D.苗族
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