逢年过节，暴饮暴食，并不会影响胃肠功能．（判断对错）

2016年9月由中国科学院国家天文台主导建设，具有我国自主知识产权、世界最大单口径、最灵敏的射电望远镜，在科学前沿实现重大原创性突破。这反映出（    ）

阅读短文，下列问题

 B

    December 25 is Christmas Day(圣诞节). Christmas is an important holiday in many countries. OnChristmas Day, most families get together for a big dinner. They give presents to each other and visit friends. The Christmas tree is an important part of the Christmas holiday. Most families buy trees. The families decorate(装饰) the tree together. Parents usually tell their children that Father Christmas comes during the night and brings presents to good children. Of course, Father Christmas isn't real. The parents of the children are really“Father Christmas”. They put the presents under the tree or into their children's stocking(长统袜)after the children go to sleep.   

游客在旅游区看到“游客止步”的告示牌后改变了行走路线，而一只宠物狗却照样前行．这种差异的本质是人类有（　　）