小明在帮妈妈做家务时发现很多地方用到了物理知识.浴室脚垫背面有小吸盘,是利用__

题型:填空题

问题:

小明在帮妈妈做家务时发现很多地方用到了物理知识.浴室脚垫背面有小吸盘,是利用______使脚垫贴在地面上;擦窗户时,一阵风吹过,窗帘向外飘去,这是因为窗外空气流速______,压强______,窗帘在内外压强差的作用下飘向窗外.

考点:大气压强的存在及应用流体压强和流速的关系
题型:填空题

一个篮球的价钱是120元,是一个排球价格的80%,一个足球的价钱是一个排球价钱的88%,一个足球多少钱?

题型:填空题

3月17日,某投机者买入5月玉米的看涨期权,权利金为18.25美分/蒲式耳,敲定价格为280美分/蒲式耳,当时5月玉米期货的市场价格为290.5美分/蒲式耳。该看涨期权的时间价值为()美分。

A.5.25

B.6.75

C.7.5

D.7.75

题型:填空题

3个月小儿患维生素D缺乏性佝偻病,护士嘱其多晒太阳,原因为日光照射可促进维生素D的合成,则人体维生素D的主要来源是()。

A.乳类中的维生素D

B.蛋黄中的维生素D

C.猪肝中的维生素D

D.植物中的维生素

E.皮肤中的7-脱氢胆固醇

题型:填空题

补气养血药中加入适量肉桂,其主要目的是( )

A.散寒止痛
B.引火归原
C.以上都不是
D.鼓舞气血生长
E.补而不滞

题型:填空题
完形填空(共20小题;每小题1.5分, 满分30分)
It was a rainy day and I was riding on a bus downtown to go to work. I was_36_next to a man in a business suit and J paid little attention_37_ we both got off at the same stop and walked to the same news-stand to get a morning_38_.
The man running the stand was obviously having a_39_day. He was rude and unsmil­ing as we bought our papers,which only_40_ more gloom (郁闷) to my day. The business­man_41_my gloomy feeling and smiled brightly,_42_the news-stand owner for the paper and for being open on such a( n) _43_to make sure we were able to get our papers.
As we_44_away,I asked this man why he was so_45_to the newsman when he didn't _46_his expression of thanks and friendliness. The businessman smiled at me and said,"Why would I let someone else _47_what I say and what I feel?"
We then_48_to go to our own work places. To this day,I still don't know who that businessman was,or_49_he worked. He appeared briefly in my life and disappeared just as_50_. But I've never forgotten the words he said and his_51_which seemed like a ray of light on a gloomy day.
That was a good 25 years_52_,but the effect this had on my life has lasted. I_53_had a chance to thank him personally,but the way I look at life has changed _54_those words. I have learnt that we cannot control people and_55_that come to us, but we can always control our response to them. 
小题1:
A.whispering B.sitting C.driving D.weeping
小题2:
A.since B.after C.unless D.until
小题3:
A.paper B.suit C.call D.coffee
小题4:
A.good B.nervous C.bad D.long
小题5:
A.providedB.offered C.added D.returned
小题6:
A.breathedB.called C.noticed D.took
小题7:
A.thankingB.envying C.asking D.blaming
小题8:
A.evening B.afternoon C.morning D.midnight
小题9:
A.turned B.passed C.drove D.ran
小题10:
A.cruel B.serious C.pleasant D.rude
小题11:
A.stick to B.refer to C.get used to D.respond to
小题12:
A.explain B.understand C.control D.correct
小题13:
A.attempted B.sought C.continuedD.separated
小题14:
A.where B.why C.whether D.how
小题15:
A.gently B.quickly C.regularly D.strangely
小题16:
A.humor B.smile C.business D.help
小题17:
A.ago B.before C.later D.after
小题18:
A.often B.seldom C.once D.never
小题19:
A.in search of B.in memoryof C.for the purpose ofD.as a result of
小题20:
A.situations B.statements C.possibilities D.positions
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