下列生殖方式为卵生的脊椎动物是( )
A:蝙蝠
B:白鳍豚
C:扬子鳄
D:蝗虫
Time of the accident
Last week.
Place of the accident
On my way to Li Ming's ____.
Reason and result of the accident
I rode too ____. My bike hit a big tree. I was in a lot of ____.
Aid
A passerby ____ me to the ____.
演示地球自转:用打开的手电筒模拟“太阳”,将地球仪放置在手电筒前方,自西向东拨动地球仪,如图,该实验主要演示的地理现象是( )
选出恰当的应答语( )