单项选择题

IBM is a company of ______

A．only IT business
B．only computer business
C．both IT and computer businesses
D．both IT and consulting businesses
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单项选择题
The author suggests that ______.
A．much sympathy will inevitably humiliate the old
B．kindness and unselfish help are not necessarily what the old need
C．the old should be left to do whatever they want by themselves
D．to the old, the friends' and relatives' respect is, at least, as important as their concern
单项选择题
Why did one scientist expose birds to artificial daylight
A．To test the relationship between daylight and a disease of the glands common to birds.
B．To test the relationship between daylight and migration.
C．To test the relationship between migration and temperature.
D．To test the relationship between daylight and changes in the season.
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