A.无线电广播
B.电视
C.手机
D.有线电话
答案:D
Many people have come to realize they should go on ________ diet and make room for ________ exercise.
A.a; 不填
B.the; an
C.the; the
D.不填; an
露天()堆垛着火后,易形成堆垛内外一起燃烧。
(A)金属
(B)棉花
(C)原油
(D)粮食