______his speech than a young woman stood up to ask a question.
A. Scarcely the chairman finished
B. No sooner had the chairman finished
C. Scarcely did the chairman finish
D. No sooner did the chairman finish
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______started mowing the lawn when it began raining.
A. No sooner I had
B. No sooner had I
C. Hardly I had
D. Hardly had I
假设P为债券价格，F为面值，C为票面收益，r为到期收益率，n是债券期限，如果按年复利计算，零息债券到期收益率为()。
We learn from the text that an ostrich can go a long distance at high speed as
A. it is a special kind of bird
B. it lives in large desert areas
C. it has special wings and legs
D. it is the largest bird in the world
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