单项选择题

A．Recognize and define the problem.
B．Look for information to make the problem clearer.
C．Have suggestions for a possible solution.
D．Find a solution by trial or mistake.
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单项选择题
A．Students with a library card can check any book out.B．Reference books are not allowed to be checked out.C．Only students with a library card can check out reference books.D．The number of books a student can check out it unlimited.
A．Students with a library card can check any book out.
B．Reference books are not allowed to be checked out.
C．Only students with a library card can check out reference books.
D．The number of books a student can check out it unlimited.
单项选择题
A．Consult with her frequently.B．Use the computer regularly.C．Occupy the computer early.D．Wait for one’s turn patiently.
A．Consult with her frequently.
B．Use the computer regularly.
C．Occupy the computer early.
D．Wait for one’s turn patiently.
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