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【单选题】
《素问·四气调神大论》冬季应：“早卧晚起，以待阳光”是指下列哪项养生目的：A.
有利预防春季温病
B.
有利气血旺盛
C.
有利蓄养阴精
D.
有利阳气潜藏，阴精积蓄，避寒保温
E.
有利心神宁静
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【单选题】— Do you want to study in the famous research institute? — Of course, anyone that _______ be chosen may be lucky. [ ]
A.
should
B.
could
C.
must
D.
may
【简答题】设当x=θ时，函数f（x）=sinx+2cosx取得最大值，则cosθ=______．
【简答题】设当x=θ时，函数f（x）=sinx-2cosx取得最大值，则cosθ=______．
【简答题】At first the institute refused to purchase thetelescope, but this decision was _____ revised. A. occasionally B. consequently C. successively D. subsequently.
【简答题】设当x=θ时，函数f(x)＝sinx－2cosx取得最大值，则cosθ=______
【单选题】An unhappy childhood may have some negative effects on a person's character; however, they are not always ________. [ ]
A.
practical
B.
avoidable
C.
permanent
D.
beneficial
【简答题】听力原文：Researchers have found that daily walking may improve sleep quality. They have also noticed that only those who exercise in the morning have the beneficial effects on sleep. Those who exercised i...
【单选题】测定下列金属污染物，水样保存时不能加酸酸化的是 。A. Pb2+ B. Cd2+ C. Cr6+ D. Hg2+
A.
Pb 2+
B.
Cd 2+
C.
Cr 6+
D.
Hg 2+
【简答题】设当x=θ时,函数f(x)=sinx-2cosx取得最大值,则cosθ=____.
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