They will arrive our city April 20th. [ ]
A. in in
B. at at
C. in on
D. at on
答案:D
一根木头长10米,把它锯成1米长,每次用时3分钟,锯完这根木头需要______分钟.
T检验
A.20℃~30℃B.25℃~32℃C.34℃以上D.35℃E.55℃~60℃