单选题57. A write B writing C wrote D writtenAABBCCDD
单选题
57. A write B writing C wrote D written
A
A
B
B
C
C
D
D
参考解析
解析：
相关考题：
I _____a letter when she ____. A.write, callsB. wrote, calledC.was writing, callsD. was writing, called
铰链四杆机构ABCD，如果以BC为机架（静件），当机构为双曲柄机构时，各杆的长度可为（）。A、AB=130 BC=150 CD=175 AD=200B、AB=150 BC=130 CD=165 AD=200C、AB=175 BC=130 CD=185 AD=200D、AB=200 BC=150 CD=165 AD=130
单选题57. A write B writing C wrote D writtenAABBCCDD