单项选择题

Despite all the reports of physicians and health authorities, some individuals find that cigarette smoking is ______.

A．habit-forming
B．harmful
C．stimulating
D．maligant
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单项选择题
The pilot made an unexpected ______ because of engine trouble.
A．conclusion
B．crash
C．victory
D．landing
单项选择题
The ditry tricks played upon the Secretary of the State are ______ by the high ranking officials behind the scenes.
A．reckoned
B．meddled
C．manipulated
D．signified
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