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单项选择题

对中华蜜蜂威胁最大的疾病是()。

A．下痢病
B．中蜂囊状幼虫病
C．蜂螨
D．幼虫腐臭病
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未知题型
?You are an area sales manager for an international company. You have been asked to go to a meeting at your company's head officE.You cannot go, so somebody else will go in your placE.
?Write an e-mail to Jane Lee, who is organizing the meeting.
?apologizing for not being able to go to the meeting
?explaining why you cannot go
?saying who will go.
?Write 40-50 words.
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单项选择题
The popularity of ballet soared in France.
A、正确
B、错误
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