单项选择题

To understand what we are going to talk about today, you have to rely on what you have read previously.

A. beforehand
B. carefully
C. before
D. in advance
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单项选择题
It was said that after his father's death, he possessed nearly half of his father's wealth,
A. wasted
B. owned
C. purchased
D. sold
单项选择题
Not everyone can perceive the gradual change in the writer's style.
A. appreciate
B. notice
C. describe
D. discover
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