已知(2x+1)3的展开式中,二项式系数和为a,各项系数和为b,则a+b=___

题型:填空题

问题:

已知(2x+1)3的展开式中,二项式系数和为a,各项系数和为b,则a+b=______.(用数字表示)

考点:二项式定理与性质
题型:填空题

《2012年中国轿车市场研究预测报告》研究表明,我国轿车市场需求将逐年上升。到2020年,家用轿车保有量将达到7200.17万辆,农村居民家用轿车保有量为367.18万辆,城镇居民家用轿车保有量为6832.99万辆。在我国,居民的轿车需求将逐年上升的主要原因是

A.外汇汇率跌落

B.轿车质量不断提高

C.入世后,我国的关税提高

D.居民的家庭收入不断增加

题型:填空题

病历摘要:男性患者,69岁,头痛、烦躁、气急、恶心、呕吐,于下午2时急诊。高血压病史21年,近2年常感眼睑肿胀、心悸、恶心、食欲不振。体检:P100次/min,律整,BP33/16.7kPa,心率100次/min,律整,A2亢进,两肺呼吸音略粗,腹软,肝脾未扪及,下肢无水肿。X线检查:胸透见左心室扩大。实验室检查:血肌酐151.2mmol/L,空腹血糖14mmol/L。

如何指导该患者选择合理膳食()。(提示:经处理后,患者病情得到控制,血压降至140/90mmHg。后经问诊,患者平常少食蔬菜,口味偏浓,嗜烟、酒)

A.限制钠盐,一般每天摄入食盐以不超过6g为宜

B.限制钠盐,一般每天摄入食盐以不超过3g为宜

C.减少膳食脂肪

D.限制饮酒

E.限制钠盐,一般每天摄入食盐以不超过8g为宜

F.细嚼慢咽,避免过饱

G.多吃动物脂肪、内脏

H.少吃新鲜蔬菜、水果

题型:填空题
It was my first year teaching in a special needs class, and I wasn’t sure what to expect at our yearly. Special Olympics sports meeting. My   1  had some challenges, from learning disabilities to cerebral palsy(大脑性麻痹).
Mark was one with the latter. Restricted to a   2 , he had to fight his spasms (抽筋) just to control his movements.   3 , he always had a positive attitude and greeted everyone with a huge smile.
His classmates   4  him and always took the time to make sure he was included in group activities, especially Mike, Andy and Lucas, three boys who were good at   5 . Obviously, Mark wanted to be like them, unrestricted by the limitation of his   6  and watching them moving on the playing field seemed to fill him with   7  .
When the day came, Mike, Andy and Lucas   8  well in their sports events, and gave the normally calm audience something to cheer about. Mark sat in his wheelchair on the sidelines,  9   them on.
The final event of the day was the 400 meter race.   10  was invited to either walk or run, according to their ability, around the   11  length of the track.
When Mike, Andy and Lucas reached the finish line, they   12   and turned to look behind them. At the   13   of the crowd, determined not to be left behind, was Mark. All his classmates had   14   him. He was alone on the track with over half the distance left to   15 .
Mike, Andy and Lucas looked at each other, and a silent   16  passed between them. Slowly, they jogged   17  towards their friend, cheering him on   18  he had done for them moments before.
The progress was   19 , but in the end the three star runners and Mark crossed the finish line together to the enthusiastic cries of their teachers and classmates. Seeing the look on Mark’s face as he crossed the finish line, hands upraised and laughing, I came to understand what   20  the Special Olympics, and the determined athletes who compete, so extraordinary.
Years later, I’m still cheering them on.
小题1:
A.partnersB.friendsC.studentsD.classmates
小题2:
A.bedB.machineC.wheelchairD.desk
小题3:
A.SoB.HoweverC.OtherwiseD.Therefore
小题4:
A.protectedB.satisfiedC.respectedD.loved
小题5:
A.sportsB.practiceC.studiesD.expression
小题6:
A.interestsB.bodyC.habitsD.mind
小题7:
A.wonderB.trustC.stressD.reset
小题8:
A.trainedB.playedC.operatedD.prepared
小题9:
A.bringingB.holdingC.cheeringD.moving
小题10:
A.SomeoneB.NobodyC.AnybodyD.Everyone
小题11:
A.entireB.differentC.averageD.equal
小题12:
A.fellB.pausedC.rushedD.rested
小题13:
A.centerB.frontC.endD.top
小题14:
A.leftB.ignoredC.passedD.helped
小题15:
A.continueB.jogC.walkD.cover
小题16:
A.demandB.thoughtC.actionD.relief
小题17:
A.backB.alongC.againD.on
小题18:
A.whileB.althoughC.sinceD.as
小题19:
A.boringB.greatC.slowD.relaxing
小题20:
A.leavesB.findsC.keepsD.makes
题型:填空题

2007年我国粮食种植面积:10553万公顷,比上年增加70公顷;棉花种植面积559万公顷,增加7万公顷;油料种植面积1094万公顷,减少60万公顷;糖料种植面积167万公顷,增加10万公顷。

全年粮食产量50150万吨,比上年增加350万吨,增产0.7%。其中,夏粮产量11534万吨,增产1.3%;早稻产量3196万吨,增产0.3%;秋粮产量35420万吨,增产0.6%。

全年棉花产量760万,比上年增产1.3%。油料产量2461万,减产4.2%。糖料产量11110万吨,增产11.4%。烤烟产量239万吨,减产3.9%。茶叶产量114万吨,增产10.9%。

全年肉类总产量6800万吨,比上年减少3.5%。其中,猪肉减少9.2%;牛、羊肉分别增长6.1%和5.8%。全年水产品产量4737万吨,增长3.3%。全年木材产量6974万立方米,增长5.5%。

2002年我国的粮食产量约为()。

A.45722万吨

B.44965万吨

C.44761万吨

D.40709万吨

题型:填空题

设备基础施工测量方法的测量步骤中错误的是( )。

A.设置大型设备内控制网

B.进行设备基础上层放线

C.进行标高基准点的测设

D.进行基础开挖与基础底层放线

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