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【单选题】
已知两点 A (5,6)、 B (7,2),先将线段 AB 向左 平移一个单位,再以原点 O 为位似中心,在第一象限内将其缩小为原来的 2 ( 1 ) 得到线段 CD ,则点 A 的对应点 C 的坐标为 ( )A.
(2，3)
B.
(3，1)
C.
(2，1)
D.
(3，3)
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反馈参考答案：
举一反三
【简答题】この道( )まっすぐ行ってください。
【单选题】He walked through the store, ________ orders to his staff.
A.
imposing
B.
rapping out
C.
bawling out
D.
venturing
【简答题】A．He would have the car repaired. B．He would have walked home. C．He would have called the police. D．He would have taken a taxi.
【单选题】现有一组数据:5、6、8、4、6、9、7,则其平均差和标准差分别为
A.
平均差为1.45，标准差1.69
B.
平均差为1.35，标准差1.59
C.
平均差为1.45，标准差1.59
D.
平均差为1.35，标准差1.69
【简答题】One day a mother camel and her son walked through a desert. They were looking for water and grass. The son asked, “What do water and grass look like, Mum?”His mother answered, “Water looks like the sk...
【单选题】He was wandering through the street, looking around _________ he walked.
A.
as
B.
since
C.
while
D.
when
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