医学研究证明,笑具有激活人体某些基因的功能。人们通常认为,基因是恒定不变的。但事实上很多基因常常处于休眠状态,或者没有积极地制造蛋白质,通过某种形式的刺激,可以把它们唤醒,笑就是其中一种刺激。
夜深了,广场上游客稀疏,灯火慵懒,小吴拖着疲惫的身躯,追上了20路公交车。公交车从我跟前一闪而过时,我看见小吴抓着吊环,挤在一群人中间,眼里满是恋恋不舍。
【材料一】近年来,天津市旅游业在持续发展中日益凸显“文化旅游”的品牌效应。“老城津韵”“杨柳古镇”“溥仪旧居”“津卫摇篮”“大沽烟云”等八条独具津门文化特色的游览线路,吸引力海内外的大量游客。
As a boy, Kevin visited national parks and helearned the Earth is in ___12___condition. He felt worried, and he wanted to ___13___ the Earth. In 2009, he went to swim in waternear North Pole(北极)todraw people’s attention to the melting glaciers(融化的冰川).
I joineda band (乐队)as a drummer in my middle school. I thought itwould be fun playing the drum and meeting new friends. At first it was easy,but a month later, it got difficult. I was the only one who couldn’t keep pace (节奏)with the other players. Our teacher,Angie, singled me out to keep practicing while everyone else got to relax. Ifelt ashamed (羞愧的)as my teammates watched me fail so many times.Finally I got so tired of practicing that I didn’t care about doing it right.
①马铃薯是菜还是粮?在1月6日举办的马铃薯主粮化发展战略研讨会上,丰富多彩的马铃薯主食制品令人大开眼界。马铃薯全粉占比40%的馒头、面包、马铃薯芝士蛋糕等,都颠覆着人们对马铃薯的认知。②农业部副部长在会上表示,要以科技创新引领马铃薯主粮化发展,推动形成马铃薯与谷物协调发展的新格局。据介绍,马铃薯有望成为稻米、小麦、玉米之外的第四大主粮作物。它的种植面积将逐步扩大到1.5亿亩,年产鲜薯增加2亿吨,折合粮食约为5000万吨。
10.(12分)科技发展是大国崛起的重要因素,崛起后的大国影响着世界格局的发展演变。阅读下列材料,回答问题。材料一:宋代是中国古代科学技术发展史上最辉煌的时期,几乎在所有中国传统科学技术领域都留下了新的记录。举世闻名的四大发明中有三项完成于两宋时期……为推动世界历史的进程和世界文明的发展作出了巨大贡献。——杨宁一主编《历史学习新视野新知识》 材料二:“如果人们把整个人类社会的演进用12个小时来表示,那么现代工业时代只代表最后5分钟,而不是更多。”英国是最先发生这个5分钟事件的地方,工业革命可能是最初的关健几秒钟。正是这个革命使现代文明降临人间,人类开始从农业文明向工业文明过渡。——马克垚主编《世界文明史》
【海外网2月21日电】2月20日,北京冬奥会正式闭幕,这届冬奥会为世界留下了独具特色的中国记忆,收获了众多好评,各国运动员持续发文为北京冬奥会点赞。“感谢、祝福”成了高频词。
天在下雨,让原本就显得有些悲壮的远行更添了一份凄凉。雨不大,缠绵如丝,像是故土对他恳切地挽留,轻轻柔柔飘落在他的头发上,于发梢积出细小的雨珠连成网,将他的薄外套淋得到处是深浅不一的痕迹。天阴阴的,压下来,世界晦暗。透过这迷离的雨雾,他恍惚看到路上的行人向他迎面走来,汇成浩荡的人潮,或者说,是他感到自己正孤独地在人潮中逆流而行。
渡荆门送别李白渡远荆门外,来从楚国游。山随平野尽,江入大荒流。月下飞天镜,云生结海楼。仍怜故乡水,万里送行舟。
武汉一些小学生的家长抱怨给孩子检查作业,听写签字、背诵签字、试卷签字……最多时一天要签8个名,为了完成大量重复、机械的作业,有时家长不得不陪写甚至代写,家长们质疑,检查作业是谁的责任?作业的目的到底是什么?这么下去。家庭作业岂不成了家长作业?学生自主学习的习惯又怎么可能养成?
地瓜没进过城,没见过世面,没受过励志教育。除了憨,它没别的见识和想法。被我那也没见过世面的爹爹埋没在土里。埋没了就埋没了。土里暖和,土里有营养。果然,这没见过世面的傻子,却长成了敦实汉子,地道的瓜。一排排黄瓜手扶着藤蔓做引体向上体操。
世有伯乐,然后有千里马。千里马常有,而伯乐不常有。故虽有名马,祗辱于奴隶人之手,骈死于槽枥之间,不以千里称也。马之千里者,一食或尽粟一石。食马者不知其能千里而食也。是马也,虽有千里之能,食不饱,力不足,才美不外见,且欲与常马等不可得,安求其能千里也?策之不以其道,食之不能尽其材,鸣之而不能通其意,执策而临之,曰:“天下无马!”呜呼!其真无马邪?其真不知马也!
I often hear some students say English isdifficult, so they can’t learn it well. ___11___ English is very easy for me. I’m good ___12___ it. I’m very glad to tell you ___13___ about how I study English.
FIFA World Cup is one of the biggest sportsevents in the world. It ___11___every 4 years. The first World Cup was in 1930. It has a history of over 90years. During the World Cup, ___12___fans watch the games and cheer for their favorite teams or players.
An unexpected thing happened in the ____11____ of my eleventh year. Thehome I had ____12____inwas burned to the ground in the middle of the night. ____13____ , mymom, dad, grandma, brothers and I escaped(幸免于难).
Liu Min is an English teacher. These days, herfamily are experiencing a different life of working and studying. They get upand do morning exercises at 6:30 in the living room. After breakfast, theystart their work and study. Her husband turns on his computer in the study (书房), reading his e-mails andmaking a list of today’s work.
I lost mysmartphone at West Park on Loomis Road on Monday morning, Oct. 27. The photosin it haven’t been uploaded(上传)to the Cloud. They are very important to me.Please call me at 730-8607.
Apassenger told an air hostess(空姐)that he needed a cup of water to take hismedicine when the plane just took off. She told him that she would bring himthe ___11___ in ten minutes.
Some schools have organized too many tests thatare too difficult. As a result, students have to study hard all the time andthey have been under a lot of stress. It has been harmful to students’ mental (心理的)and physical health and it must be changed.