单项选择题

People used to think that the earth was flat, ______

A．don't they
B．wasn't it
C．didn't they
D．usedn't it
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Will come and lend us a helping hand on such an awkward occasion
A．Who do you think
B．Whom do you suppose
C．Whom do you think
D．Do you suppose who
单项选择题
Which of the following can be concluded from this passage
A．Addition. subtraction, multiplication and division are the most important feature of accounting software.
B．Business people often use personal computers to work out complicated problems with the aid of accounting programs.
C．Business people use the accounting software because it is complicated but inexpensive.
D．An accounting program is a set of instructions that tells a personal computer merely to favour business people.
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