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
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单项选择题
I was ______ the point of telephoning him when his letter arrived.
A．to
B．on
C．at
D．in
单项选择题
After a few rounds of talks, both sides regarded the territory dispute______.
A．being settled
B．to be settled
C．had settled
D．as settled
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