人的眼睛相当于一个 ____,它能在视网膜上,形成物体的 ____(选填“实”或“虚”)像.当看不清远处的物体需要佩戴 ____透镜矫正.
生物种类较少,生物群落结构单一,受人类影响最大的生态系统是 ( )
(B)
Hi, friends! What do you like to do after school? In my school, we have different things (不同的事情) to do.
Mike does his homework (家庭作业) in the classroom. He likes doing his homework at school. The classroom building is in the middle of the school.
Lucy likes playing on the playground. Many students play there after school. The playground is behind the classroom building.
Jack likes reading books in the library after school. There are lots of books in our library. The library is on the left of the classroom building.
Students can play computer games in the science building. Peter likes playing computer games after school. The science building is on the right of the classroom building.
【榜样故事】
2016年最美孝心少年许卓婧,6岁时母亲突患乳腺癌,变故让本来就不富裕的家庭变得更加艰难。爸爸是长途车司机,常年在外出差,妈妈选择了在家保守治疗。许卓婧看着病重的妈妈、劳累后变瘦的爸爸,她主动承担了买菜做饭、洗碗洗衣、照顾妈妈的重担。为了不影响孩子学习,妈妈想把女儿送到外婆家住,但是许卓婧坚决要留在家里照顾妈妈,她学习成绩优秀,在班里总是帮助其他同学。沉浸在音乐世界中的许卓婧总是积极乐观,他正在学习谱曲,5岁开始学习小提琴,每天晚上不管多累都要练琴,2015年她在全国少儿小提琴独奏展演活动中获得金奖。她希望将来能够成为一名小提琴家,想给妈妈写一首曲子,想用琴声帮助妈妈早点好起来。