水中的动植物是____呼吸的。
据国务院侨办介绍,2014年2月5日,2014年“文化中国·四海同春”艺术团将再次启程到访北美,计划在美国洛杉矶、西雅图、芝加哥、波士顿和加拿大哈利法克斯共演出5场。以南京前线文工团和总政歌舞团为艺术班底,并邀请多位知名演员加盟,艺术团阵容强大,群星璀璨。“文化中国·四海同春”经过多年的精心打造,已经在中国和世界之间架起了一座“文化之桥”,彰显了文化交流的魅力,展示了中国传统文化在海外的影响力。从文化与综合国力的角度,分析“文化中国·四海同春”艺术团再次到访北美进行演出的重要意义。
Subject: Mobile phone problem
Dear Editor,
I am a middle school student. I used to bring a mobile phone with me during school hours. But the teachers think using mobile phone is distraction (分散注意力的事) to students during school hours and also causes so much trouble in class. So now we aren't allowed to bring mobile phones to school.
I find it really inconvenient (不方便的)。 My parents feel unhappy because they can't get in touch with me(不能与我有联系) . But I can't make our school change this rule. What do you think I should do to solve this problem?
Liu Fengyi
Liu fengyi's occupation (职业)
____
Purpose (目的) for writing the e-mail
The school rule
Students aren't allowed to ____
Thing that Liu Fengyi used to do
She used to ____
Reason(原因) why Liu Fengyi's parents are unhappy
They can't ____
小强找来7个相同的啤酒瓶，装入不同高度的水，如图所示．用嘴贴着瓶口吹气，发现能吹出“1、2、3、4、5、6、7”的声音来．请你回答下列问题：
2011年4月14日金砖国家（巴西、俄罗斯、印度、中国和南非）领导人在中国海南的三亚召开峰会。回答下题。
