霍尔效应式无触点点火系主要由内装霍尔传感器的（）、点火控制器、点火线圈等组成。
A.分电器
B.火花塞
C.配电器
D.附加电阻
参考答案：A
— Do you have anything to say for yourselves?
— Yes, there is one point ______ we must insist on. [ ]
A. why
B. where
C. how
D. 不填
Tom and Jim __________ in Class 3. [ ]
A. is
B. be
C. am
D. are
