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【多选题】
关于比例缩放视图的概念,正确的有()。A.
输入“4x”，将使当前图形放大4倍显示
B.
输入“4x”，将相对放大
C.
缩放的基点是绘图窗口的中心点
D.
缩放的基点是 UCS坐标系的原点
E.
缩放的基点是光标所在点
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举一反三
【单选题】----It’s burning hot today, isn’t it ? ----Yes, __________ yesterday.
A.
so was it
B.
so it was
C.
so it is
D.
so is it
【单选题】已知一个栈的进栈序列是ABC，出栈序列是CBA，经过的栈操作是 。
A.
push,pop,push,pop,push,pop
B.
push,push,push,pop,pop,pop
C.
push,push,pop,pop,push,pop
D.
push,pop,push,push,pop,pop
【单选题】已知一个栈的进栈序列是ABC,出栈序列为CBA,经过栈的操作是( )。
A.
push,pop,push, push,pop, pop
B.
push, push,pop, pop,push,pop
C.
push,pop,push,pop,push,pop
D.
push, push, push, pop, pop, pop
【单选题】—How's the public transportation in the city? —It's very convenient, so there be any difficulty in travelling around．
A.
wouldn't
B.
shouldn't
C.
mustn't
D.
needn't
【单选题】— It’s burning hot today, isn’t it? — Yes. ________ yesterday.
A.
So was it
B.
So it was
C.
So is it
D.
So it is
【简答题】有一些整数很奇怪，加上1后既是3的倍数又是7的倍数，这样的数有______．（举例两个）
【简答题】—It’s burning hot today, isn’t it? —Yes. __________ yesterday. A．So was it B．So it was C．So it is D．So is it
【简答题】小欣和同学在街上玩，小欣发现街上有卖新椰子的．但是很奇怪的是，售货员每次在椰子上都是打两个洞，一只是用来插吸管的，另一只是用来干呢？你能解释吗？
【单选题】Life is like sport, I mean it’s a hard competitive business.
A.
in which
B.
by which
C.
for which
D.
of which
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