写出图1—2胀缝结构示意图中A、B、C的名称,简述A可采用的材料有哪些?
以下诗歌在古代都是符合押韵和平仄要求的,为什么到现代普通话有的押韵有的不押韵,有的符合平仄有的不符合,在某些方言里则都符合押韵和平仄要求?[中山大学]
春望
国破山河在,城春草木深。
感时花溅泪,恨别鸟惊心。
烽火连三月,家书抵万金。
白头搔更短,浑欲不胜簪。
游子吟慈母手中线,游子身上衣。
临行密密缝,意恐迟迟归。
谁言寸草心,报得三春晖。
假设某经济社会的消费函数为c=100+0.9y,投资为50(单位:10亿美元)。
(1)求均衡收入、消费和储蓄。
(2)如果当时实际产出(即GDP或收入)为2000,企业非意愿存货积累为多少?
(3)若投资增至100,求增加的收入。
(4)若消费函数变为c=100+0.6y,投资仍为50,收入和储蓄各为多少?投资增至100时收入增加多少?
(5)消费函数变动后,乘数有何变化?
/FVC为50%;FEV
占预计值40%,诊断COPD,给予抗感染、解痉、平喘治疗后症状好转出院 。1周前,受凉后出现发热,体温38℃,痰量增多,为黄色脓痰,口唇发绀,气短、喘憋加重,休息时也感呼吸困难,为进一步诊治而入院 。既往否认高血压、冠心病等病史 。吸烟40年,每日20支 。无毒物、粉尘接触史 。家族史无特殊 。
/L,N85%,PLT180×10
/L,Hb150g/L;尿常规(-) 。
设计任务:
请阅读下面学生信息和语言素材,设计20分钟的英语听力教学方案。教案没有固定格式,但须包含下列要点:
●teaching objectives
●teaching contents
●key and difficult points
●major steps and time allocation
●activities and justifications
教学时间:20分钟
学生概况:某城镇普通中学八年级(初中二年级)学生,班级人数40人。多数学生已达到《义务教育英语课程标准(2011年版)》三级水平。学生课堂参与积极性一般。
语言素材:
Reporter: Hi,I'm doing a survey for the Green City Daily News. What's the best clothing store in town?
Boy:I think Jason's is the best.
Reporter: Why?
Boy: Jeans Corner and Trendy Teens are good stores, but Jason's has good quality clothes. It's also cheaper than the other stores.
Reporter: What do you like about the other stores?
Boy: Well, let me see. Trendy Teens is in a fun part of town, but it's expensive. Don't go to Funky Fashions. It has the worst clothes in town.
Reporter: OK. What about the radio stations in Green City? What's the best radio station?
Boy: I guess Jazz 107.9 FM is the best.
Reporter: Why?
Boy: Because it has the most interesting music. It's much better than the other stations in town.
Reporter: What about the other radio stations?
Boy: Well, I think Oldies 102.1 FM is pretty bad. It has the worst music.
Reporter:I heard that Easy Listening 97.9 FM is the most popular.
Boy: Not for me.
Reporter: Why not?
Boy: Just listen to their commercials. They' re worse than commercials of All Talk 970 AM!