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【简答题】
如图，点D，E分别在AB/AC上， （1）已知：BD=CE，CD=BE，求证：AB=AC （2）分别将“BD=CE”记为①，”CD=BE”记为②，“AB=AC”记为③，以①、③为条件，以②为结论构成命题1，以②、③为条件，以①为结论构成命题2，命题1是______ 命题，命题2是______ 命题（真、假）
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反馈参考答案：
举一反三
【单选题】According to the text, a drive - in window is ______.
A.
a car window from which you can see the driver
B.
a window in the restaurant from which you get your takeout in the car
C.
a place where you check the mechanic condition of your car
D.
an entrance where you return the used plates after eating
【单选题】If you have to switch manually from 2-wheel drive to 4-wheel drive,it is called ( ).
A.
full time drive
B.
real time drive
C.
part time drive
D.
4-wheel drive
【单选题】It is over _______ from Shijiazhuang to Beijing. [ ]
A.
three hour's drive
B.
three hours' drive
C.
three hours' drives
D.
three hours drive
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