She likes music _____ it's fun. [ ]
A. why
B. because
C. what
D. when
答案：B
Greatly moved by her words, __________.
A．tears came to his eyes
B．he could hardly hold back his tears
C．tears could hardly be held back
D．his eyes were filled with tears
润滑系统保养得“五定“要求是：定点、定质、定量、定期及（）
