单项选择题

56（）

A．idea
B．sole
C．thought
D．means

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单项选择题
In 1868, Abraham Lincoln was ______.
A．very critical
B．unpopular
C．very popular
D．very courteous
单项选择题
What is the main purpose of this passage
A．To look back to the early days of computers.
B．To explain what technical problems may occur with computers.
C．To discourage unnecessary investment in computers.
D．To warn against the blindness to the probable shortcomings of computers.
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