I.重点词汇及短语
1.太阳系_____________________ 2.及时；终于___________________
3.下蛋 ______________________ 4.产生；分娩____________________
5.轮到某人；接着_______________ 6.阻止；制止 ___________________
7..挡住（光线）___________________ 8.感到高兴；感到振奋 _____________
9.既然 _______________________ 10.突发；爆发 __________________
