大鼠离乳时间为()。
A、3-4天
B、8-10天
C、14-17天
D、20-21天
参考答案:D
掷界外球直接掷入对方球门应判罚为()。
A.进球
B.进球无效
C.由对方罚球门球
The Chinese lunar New Year usually _____ two records: the world's most watched television gala show, and its busiest telecommunications network.
A.develops
B.witnesses
C.establishes
D.launches