单项选择题

A good scientist （） into all aspects of a problem in order to find solutions.

A. pricks
B. pokes
C. probes
D. peers

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单项选择题

The morning news says a school bus（）with a train at the junction and a group of policemen were sent there immediately.

A. bumped
B. collided
C. crashed
D. struck

单项选择题

Many soldiers have to remind themselves when they return home not to use（）language of the barracks.

A. vulgar
B. gross
C. rough
D. coarse

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