A：太阳终年直射赤道
B：全球全年无四季变化
C：无大气环流现象
D：全球全年都是昼夜平分
cat, maybe, is, chasing, a, our, mouse, now (.)
____
Dear Betty,
I'm your eraser Jill. This afternoon you lost me in your classroom. Simon found me and gave me to your English teacher Ms. Green. Now Ms. Green's three keys and I are in Ms. Green's bag. The bag is yellow. It's on Ms. Green's desk. Please call Ms. Green at 718-0167 and ask her for me. You can come to the library, too. Ms. Green is in the library now.
Jill
一般情况下，鸟类在空中飞行时是____和____等方式交替使用．
