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【单选题】
物体在 2 π秒时间内所作的完全振动次数被称为 。A.
振幅
B.
相位
C.
圆频率
D.
频率
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【单选题】My mother made a ________ with the salesgirl and brought down the price of the fruit. [ ]
A.
bargain
B.
choice
C.
difference
D.
promise
【简答题】下列关于法治和法制的区别，说法错误的是：（ ）
【单选题】Polly consumes crackers and fruit. The price of fruit rose and the price of crackers stayed constant. The income effect on Polly's demand is:
A.
zero because Polly's income didn't change.
B.
the change in Polly's demand if her income is decreased by the change in the price of fruit times her old consumption of fruit.
C.
the change in Polly's demand if her income is decreased by the total amount she used to spend on fruit.
D.
the change in Polly's demand if her income is increased by the amount she used to spend on fruit.
【单选题】The boy named a price which was five times ________ he would have got for the fruit locally.
A.
which
B.
that
C.
what
D.
as
【简答题】下面的XML文件中有哪些错误？改正之后用IE验证。 ＜!--一个简单的XML文件--＞ ＜? xml version=”1.1” ?＞ ＜fruits＞ ＜fruit＞ ＜name＞orange＜price＞ ＜/name＞1.2＜/price＞ ＜/fruit＞ ＜fruit＞ ＜name＞banana＜price＞ ＜/name＞1.8＜/price＞ ＜/fruit＞ ＜/Fruits＞
【单选题】The price of fruit has increased recently ______ the price of vegetables has gone down.
A.
when
B.
while
C.
whereas
D.
otherwise
【单选题】For a fixed price of $6 you can have soup, a main meal with two vegetables and fruit. [ ]
A.
serving
B.
to serve
C.
serve
D.
served
【单选题】The price of fruit has increased recently ______the price of vegetables has gone down.
A.
when
B.
whether
C.
whereas
D.
otherwise
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