着反光背心时，肩带须从制服肩章下穿过并露出肩章符号。
参考答案：对
40，23，( )，6，11
A．7
B．13
C．17
D．19
More and more high-rise buildings have been built in big cities （） space.
A. in search of
B. in place of
C. for lack of
D. for fear of
