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【简答题】
某办公用品销售商店推出两种优惠方式：①购一个书包，赠送1 支水性笔；②购书包和水性笔一律按9 折优惠。书包每个定价20 元，水性笔每支定价5 元。和同学需要买4 个书包，水性笔若干支（不少于4 支）。 （1 ）分别写出两种优惠方式购买费用y （元）与所买水性笔支数x （支）之间的函数关系式； （2 ）对x 的取值情况进行分析，说明按哪种优惠方式购买比较便宜； （3 ）和同学需买这种书包4 个和水性笔12 支，请你设计怎样购买最经济。
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【单选题】—Are you free, Jane? Let, s go to watch the movie. —Well, time is _____, the real problem is I haven't got much money. [ ]
A.
the major issue
B.
the question
C.
not the issue
D.
out of the question
【简答题】For real number a，let[a]denote the maximum integer which does not exceed a．For example，[3.1]=3，[﹣1.5]=﹣2，[0.7]=0 Now let f（x）=（x+1）/（x﹣1），then[f（2）]+[f（3）]+…+[f（100）]=（ ）．（英汉小词典real number：实数；the m...
【单选题】Let（）the real fact of the accident．
A.
I tell you
B.
me to tell you
C.
I to tell you
D.
me tell you
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【单选题】A teacher should let his students face real life situations.
A.
teacher should ____his students ____ real life situations.
B.
expose...to
C.
adhere to
D.
reversed
E.
exposure
F.
handle
G.
take liberty with
H.
adolescence
I.
lay hands on
J.
exterior K. individual’s
【单选题】Let us define the real wage as the purchasing power of one hour of labor. In the Ricardian 2X2 model, if two countries under autarky engage in trade then
A.
the real wage will not be affected since this is a financial variable.
B.
the real wage will increase only if a country attains full specialization.
C.
the real wage will increase in one country only if it decreases in the other.
D.
the real wage will rise in both countries.
E.
the real wage will fall under pressure of international competition.
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