卤钨灯与白炽灯相比具有()
A、寿命短,发光效率低的特点
B、寿命长,发光效率低的特点
C、寿命短,发光效率高的特点
D、寿命长,发光效率高的特点
参考答案:D
For fear that others would hear her, she _____ the news to me.[ ]
A. announced
B. passed
C. described
D. whispered
208乘3的积的中间[ ]
A.有1个零
B.有2个零
C.没有零