_______是数九寒天，爷爷_______坚持锻炼。[ ]
A．如果……就…… B．因为……所以…… C．即使……也…… D．不但……而且……
答案：C
People are encouraged to speak openly, but careless words are ________ to hurt others' feelings.[ ]
A．possible
B．probable
C．likely
D．sure
检测热辊电机温保好坏，测量辊件插头的（）。
