1．Drug abusing may have some side effects on one's health; however, it is not always ________ if he stops it timely.
A．permanent B．temporary
C．avoidable D．beneficial
[解析]permanent 永久的。句意：滥用毒品对健康有副作用；然而，如果及时停止副作用并非总是长久的。temporary 暂时的；avoidable 可避免的；beneficial 有益的。
[答案]A
2．—Credit cards are ________ useful when travelling.
—True. They save us the trouble of taking too much cash.
A．finally B．nearly
C．hardly D．particularly
[解析]particularly 尤其，特别地。句意：信用卡在旅行时尤其有用。
[答案]D
