扑灭图书馆图书失火应用的灭火器是________;扑灭加油站里汽油失火应用的灭火器是_______
A.泡沫灭火器 B.干粉灭火器 C.液态二氧化碳灭火器
C;B
As John turned he glanced at the calendar hanging beside the phone, and suddenly realized what day
it was. [ ]
A. up
B. around
C. on
D. down
“后天之精”来源于()。
A、水谷
B、父母
C、肾
D、肺