Is Cindy better at math than Mary? [ ]
A. very
B. a bit of
C. even
答案：C
Integration （ ） is the process of verifying that the components of a system work together as described in the program design and system design specifications.
A．trying
B．checking
C．testing
D．coding
中学生应该记住的报警电话是（）
①火警119
②报警110
③救护120
④交通事故122
A、①②
B、①③④
C、①③④
D、①②③④
