单项选择题

What do we learn from the last paragraph

A．If we focus our attention on one thing, we might forget another.
B．Memory depends to a certain extent on the environment.
C．Repetition helps improve our memory.
D．If we keep forgetting things we'd better return to where we were.

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单项选择题

What is the passage mainly about

A．The process of gradual memory loss.
B．The causes of absent-mindedness.
C．The impact of the environment on memory.
D．A way of encoding and recalling.

单项选择题

What is the primary reason for the big shortage of teachers this summer

A．Retirement of teachers.
B．Dismissal of uncertified teachers.
C．Resignation of uncertified teachers.
D．Disputes between the administration and the teachers.