A:所有的鸟都有求偶、交配和产卵的行为
B:鸟类产的卵就是一个卵细胞
C:母鸡产的所有卵都可以孵化出小鸡
D:家鸽的幼鸟在孵出后就会行走,觅食
根据句意及首字母提示完成单词
(1)—Why are you so____(兴奋的)? —I won the first place in the match.
(2)It____(花费)me nine hours to get to Los Angeles.
(3)Can you____(猜)what’s in the box?
(4)What are you going to do on____(假期)?
(5)Is Hollywood near the____(太平洋的)Ocean?
下图表示温特的胚芽鞘实验,分析正确的是( )
亚非欧三大洲都濒临的海是 ( )