—How much did you _____ for "BYD"?
—80,000 yuan. [ ]
A. pay
B. spend
C. take
D. cost
答案:A
此小儿的年龄最可能是()。
A.1岁
B.1岁半
C.2岁半
D.3岁
E.3岁半
热交换器在检修前应做好哪些工作?