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【简答题】
Just a couple of hours ago, I was on the plane, ready to fly home from London. The flight had been put off by a few hours so it felt good to be so close to take-off. I had my iPad in place and a new book to read. Then, over the loudspeaker came the pilot’s voice: “ We are sorry to tell you we must cancel this flight because there’s still something wrong with the plane. ” The passengers’ reactions that announcement led to were interesting. One man close to me began to argue with an air hostess. A couple in another row complained loudly. A businessman in a black suit even kicked the seat in front of him. Yet some passengers acted differently. An elderly gentleman smiled as he helped others take their bags down from the shelf. A teenager, rather than trying to rush off the plane like most of the other passengers, stopped to help a woman with disability. The lady sitting next to me laughed and said: “ Hey, it’s not the end of the world, ” before she made a call to her kids and shared her adventure with them. No life is perfect; mine certainly isn’t. We all must face something unexpected, both large and small. You and I have the power to choose to rise above the external circumstances (外部环境) . We always have the choice to be strong and kind when we are in trouble. My seatmate was right—things didn’t get that terrible. Anyway, I am safe, I have my health. I have two wonderful children. I have work I love and so much to be grateful for. Sure I now have to wait a few hours to catch the next flight home.
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【多选题】城市的复合功能有:
A.
生产中心功能:国家和地区的生产基地
B.
商业中心功能:商品流通和贸易集散地
C.
交通中心功能:通常沿江、沿海、沿路、沿边
D.
信息中心功能:有专门的设施传播信息
【简答题】城市的复合功能有哪些?
【多选题】发展到今天,城市已成为高度复杂的、多功能的、综合性的有机体,是一定地域内的()中心。
A.
政治
B.
经济
C.
文化
D.
行政
【判断题】把pH=3与pH=5的酸溶液等体积混合,溶液的pH值为4。
A.
正确
B.
错误
【单选题】远视眼镜是正屈光力的镜片,戴上后,远视眼就能在晶状体不调节的情况下,轻松看清近处了。
A.
正屈光力
B.
无屈光力
C.
负屈光力
D.
变屈光力
【单选题】下列哪项不是抗菌药物联合用药的目的
A.
扩大抗菌谱
B.
增强抗菌活性
C.
减少耐药菌的出现
D.
延长作用时间
【单选题】常温下,下列说法不正确的是
A.
0.1 mol/L的Na 2 SO 3 溶液中粒子浓度关系: c (OH - )= c (HSO 3 - )+2 c (H 2 SO 3 )+ c (H + )
B.
将常温下pH=12的氢氧化钠溶液与pH=2的醋酸溶液等体积混合后,溶液呈碱性
C.
把等体积的1×10 -5 mol/L的硫酸与4×10 -5 mol/L的NaOH溶液相混合,混合液的pH值与5×10 -6 mol/L的Ba(OH) 2 溶液的pH值相同
D.
0.2 mol·L -1 CH 3 COOH溶液与0.1 mol·L -1 NaOH溶液等体积混合:2 c (H + )-2 c (OH - ) = c (CH 3 COO - )- c (CH 3 COOH)
【单选题】近视眼镜是( )的镜片,戴上后,近视眼就能在晶状体不调节的情况下,轻松看清远处了。
A.
正屈光力
B.
无屈光力
C.
负屈光力
D.
变屈光力
【简答题】是指两种或两种以上的形态融合或重合在一起所产生的新型形态。随着环境小品的不断发展深化,不再只满足单一的使用功能,而是力求将多种功能融于一体,如花坛、树池、水池的边界可形成供人休息的座椅,这样不仅能够有效地实施环境小品的功能,降低建设成本,发挥设计的综合效益,还可以产生复合效用的美感,形成完美的城市公共空间。
【简答题】在做盐酸与氢氧化钠溶液中和反应的实验时,化学兴趣小组的同学围绕盐酸所氢氧化钠是否恰好完全反应等问题进行了探究。 【实验一】(1)用pH试纸测定反应过程中溶液的pH:用_______(填一种仪器名称)醮取溶液沾在pH试纸上,再把pH试纸显示的颜色与___________对照。当测得溶液的pH_______7时(填“>”、“=”或“【实验二】用无色酚酞试液作指示剂进行如下实验: (2)指出(或改正)上...
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