单项选择题

When the engine would not start, the mechanic inspected all the parts to find what was at （）

A. wrong
B. trouble
C. fault
D. difficulty

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The task won’t feel so （）if you break it down into small, easy-to-accomplish steps.

A. confusing
B. sobering
C. overpowering
D. exciting
单项选择题
He was chosen leader by general ______.
A. compromise
B. command
C. consent
D. conviction
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