破伤风梭菌的致病物质是有强烈毒性的外毒素,主要引起() A.肠黏膜坏死 B.骨骼肌痉

题型:单项选择题

问题:

破伤风梭菌的致病物质是有强烈毒性的外毒素,主要引起()

A.肠黏膜坏死

B.骨骼肌痉挛

C.呼吸肌麻痹

D.神经末梢功能障碍

E.败血症

考点:临床医学检验临床微生物微生物学检验技术微生物学检验技术题库
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下列哪项不属于牢脉的特征()

A.沉

B.涩

C.大

D.弦

E.长

题型:单项选择题

阅读材料,回答下列问题。(8分)

材料一:2009年9月中旬至今已以来西南云、贵等地大范围干旱。气象专家通过分析广西上空大气结构,发现受厄尔尼诺现象影响,在台湾岛至中南半岛之间,形成了一条长3000多公里、宽度跨越4个纬度的巨型高压坝。分析认为,全球气候变暖,太平洋厄尔尼诺现象加剧,破坏了大气结构,造成海洋季风无法登陆形成降雨,是导致这次极端干旱的主要原因。

材料二:

(1)从图中可以看出受到旱灾影响的省份有____、_____、____等。

(2)这次极端干旱出现的主要原因是,近年来,全球气候变暖,太平洋厄尔尼诺现象加剧,破坏了大气结构,造成来自______洋的______季风无法登陆造成的。而我国东部地区的降水受来自______洋的东南季风影响。

(3)人们采取哪些措施缓解旱情?

题型:单项选择题

第二节(共5小题;每小题2分,满分10分)

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

  Are you truly happy? Do you ever know what that it means to be happy and what it takes to achieve happiness?   51   the following are a few tips that I follow to create happiness in my life.

  ●  Make a plan for attaining goals that you believe will make you happy. You moods will very likely increase if you are going after something you value.

  ●  Surround yourself with happy people. It is easy to begin to think negatively when you are surrounded by people who think that way.   52   .

  ●  When something goes wrong, try to figure out a solution instead of being absorbed in self pity. Truly happy people don't allow setbacks to affect their mood because they know that with a little thought they can turn the circumstances back to their favor.

  ●    53   These few minutes will give you opportunity to focus on the positive things in your life and will lead you to continuous happiness.

  ●    54   .Whether you treat yourself to lunch, take a long, relaxing bath or simply spend a few extra minutes on your appearance, you will be subconsciously(下意识地)putting yourself in a better mood.

  ●  Finding the humor in situations can also lead to happiness. Find a way to make light of a situation that would otherwise make you happy.

  ●  Keeping healthy is another way to achieve happiness.   55   .

A.What makes one person happy may be very different from what makes someone else happy.

B.On the contrary, if you are around people who are happy, their emotional state will be infectious.

C.Being overweight or not eating nutritious foods can have a negative effect on your mood.

D.These are important questions for anyone who is seeking happiness to ask themselves.  E.Spend a few minutes each day thinking about the things that make you happy.

  F.There are some steps in life that lead to happiness.

  G.It's also important to take some time each day to do something nice for yourself.

题型:单项选择题
如图所示,两根相距为l的平行直导轨ab、cd、b、d间连有一固定电阻R,导轨电阻可忽略不计;MN为放在ab和cd上的一导体杆,与ab垂直,其电阻也为R;整个装置处于匀强磁场中,磁感应强度的大小为B,磁场方向垂直于导轨所在平面(指向图中纸面内);现对MN施力使它沿导轨方向以速度v(如图)做匀速运动;令U表示MN两端电压的大小,则(  )

A.U=vBl,流过固定电阻R的感应电流由b到d

B.U=vBl,流过固定电阻R的感应电流由d到b

C.U=vBl,流过固定电阻R的感应电流由b到d

D.U=vBl,流过固定电阻R的感应电流由d到b

题型:单项选择题

用季节指数法分析季节变动的缺陷有()。

A.没有考虑长期趋势的影响

B.考虑了长期趋势的影响

C.季节比率的高低受各年数值大小的影响

D.季节比率的高低不受各年数值大小的影响

E.无法消除长期趋势的影响

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