单项选择题

How can a nonscientist explain an abstract theory with such ______.

[A] confidence
[B] assurance
[C] self-possession
[D] insurance

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单项选择题

Merry is a woman of ______ who has never abandoned her principles for the sake of winning a vote.

[A] honesty
[B] reputation
[C] integrity
[D] notoriety

单项选择题

The journalist refused to ______ the source of her information.

[A] reveal
[B] disclose
[C] divulge
[D] betray

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