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【单选题】
I sent invitations to sixty people, ____________have replied.A.
of whom only twenty of these
B.
of whom only twenty
C.
only twenty of these whom
D.
only twenty who
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举一反三
【简答题】求下列函数的导数： （1）y=sin3x； （2） 。
【单选题】His behavior. _______ his lazy attitude toward to work.
A.
forbids
B.
impresses
C.
reflects
D.
occupies
【单选题】已知函数 f(x)=sin( π 3 -x) ，则要得到其导函数y=f′（x）的图象，只需将函数y=f（x）的图象（ ）
A.
向左平移 2π 3 个单位
B.
向右平移 2π 3 个单位
C.
向左平移 π 2 个单位
D.
向右平移 π 2 个单位
【简答题】求下列函数的导数： （1）y=log 4 x 3 -log 4 x 2 ； （2）y= 2 x 2 +1 x -2x ； （3）y=-2sin x 2 （2sin 2 x 4 -1）．
【简答题】关于出境、入境 John, an Italian. If he goes to Beijing, for Italy, his behavior is 1. _______ For China, his behavior is 2. __________ For both Italy and China, his behavior is 3. __________
【简答题】He was loud and angry, and his friends told him to _____his behavior. A) modify B) convert C) transform D) differ
【单选题】The officer is gallant in his behavior. toward his young secretary.
A.
brave
B.
pertinent
C.
obedient
D.
courtly
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