极大日期出现在每年10月份的是()流星雨。
A、猎户座
B、双子座
C、天琴座
D、仙女座
参考答案:A
______ of his childhood home in Hannibal, Missouri, provided Mark Twain with the inspiration for two of his most popular novels.
A.Remembering
B.Memories
C.It was the memories
D.He remembered
当砂或石的质量比较稳定,进料量又较大时,可以()为一验收批。
A.1200吨
B.1000吨
C.800吨
D.600吨