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【判断题】
我国环境标准分为以下几类，包括环境质量标准、污染物排放标准、环境基础标准、环境方法标准、环境标准物质标准和环保仪器设备标准。A.
正确
B.
错误
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举一反三
【单选题】正确的健康概念是
A.
无病就是健康
B.
没有疾病和虚弱
C.
有健康的躯体和正常的智商
D.
身体上和精神上的完好状态
E.
身体上、精神上和社会适应的完好状态，而不仅仅是没有疾病或不虚弱
【单选题】--- He looks so tired. What’s wrong? --- Nothing serious. He just stayed up last night, ___________his papers.
A.
to prepare
B.
having prepared
C.
prepared
D.
preparing
【简答题】Laura opened the envelope, (fold)______ the letter and began to read it carefully.
【单选题】He ___be over forty years old. He looks so young.
A.
may not
B.
must not
C.
can not
D.
needn't
【单选题】听力原文：M: Lately Greg has been wearing his new leather jacket and he looks so cool. W: Certainly a 180-degree change from his previous style. I almost didn't recognize him. Q: What does the woman mean? ...
A.
Greg used to be so informal in his dress.
B.
Greg used to be very formal in his dress.
C.
Greg is normally not very conscious of his style.
D.
Greg spent 180 dollars on his new leather jacket.
【单选题】Please read the _____ on the bottle of the medicine carefully and pay attention to the amount and the time to take the medicine．
A.
explanations
B.
instructions
C.
introductions
D.
descriptions
【单选题】—Please keep it secret between you and me. —He's ______ known the truth because he looks so unhappy. [ ]
A.
possibly
B.
probably
C.
fairly
D.
very much
【单选题】Professor Smith promised to look()my paper, that is, to read it carefully before the defense.
A.
after
B.
over
C.
into
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