用芳香烃A为原料合成G的路线如下:其中D分子苯环上只有一个支链,该分子在光照条件下与

题型:填空题

问题:

用芳香烃A为原料合成G的路线如下:

其中D分子苯环上只有一个支链,该分子在光照条件下与Cl2发生取代反应生成的一氯代物只有一种,D与新制备的Cu(OH)2悬浊液反应生成红色沉淀。

B→C的反应类型是______,C→D的反应类型是______。

考点:教师招聘考试中学教师招聘笔试山东省教师公开招聘考试中学化学真题2013年
题型:填空题

类风湿性关节炎活动期的标志是

A.畸形

B.压痛

C.梭状指

D.自发痛

E.晨僵

题型:填空题

根据病史,初步诊断不考虑下列哪项疾病

A.尿路感染
B.前列腺增生
C.膀胱肿瘤
D.慢性尿潴留
E.膀胱结石

题型:填空题

Everyone becomes a little more forgetful as they get older, but men’s minds decline more than women’s, according to the results of a worldwide survey.

Certain differences seem to be inherent in male and female brains: Men are better at maintaining and dealing with mental images (useful in mathematical reasoning and spatial skills), while women tend to excel (擅长) at recalling information from their brain’s files ( helpful with language skills and remembering the locations of objects).

Many studies have looked for a connection between sex and the amount of mental decline (衰退) people experience as they age, but the results have been mixed.

Some studies found more age-related decline in men than in women, while others saw the opposite or even no relationship at all between sex and mental decline. Those results could be improper because the studies involved older people, and women live longer than men: The men tested are the survivors, "so they’re the ones that may not have shown such cognitive decline," said study team leader Elizabeth of the University of Warwick in England.

People surveyed completed four tasks that tested sex-related cognitive skills : matching an object to its rotated form, matching lines shown from the same angle, typing as many words in a particular category (范畴) as possible in the given time, e.g. "object usually colored gray", and recalling the location of objects in a line drawing. The first two were tasks at which men usually excel; the latter were typically dominated by women.

Within each age group studied, men and women performed better in their separate categories on average. And though performance declined with age for both genders, women showed obviously less decline than men overall.

The author aims to tell us that().

A.women’s minds perform better than men’s

B.men’s minds decline more with age

C.everyone becomes a little more forgetful as they get older

D.a survey on human’s mind decline was done recently

题型:填空题

使用抗生素后敏感菌株被消灭后,剩下的耐药菌株大量繁殖所引起的感染为()

A.二重感染 

B.慢性感染 

C.原发性感染 

D.亚急性感染 

E.继发性感染

题型:填空题

伤寒,阳脉涩,阴脉弦,法当腹中急痛,先与()

A.小柴胡汤

B.桂枝加芍药汤

C.大建中汤

D.小建中汤

E.桂枝加大黄汤

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