万能角度尺可以测量0o--360o的任何角度。
参考答案：错
Leave your key with your neighbor ________ you lock yourself out one day. [ ]
A. as long as
B. even though
C. in case
D. as if
万方数据已收录”西北工业大学出版社”2008年出版的图书有多少本（）
A.193
B.187
C.216
D.396
