Young as he is, David has gained ____ ri

题型:选择题

问题:

Young as he is, David has gained ____ rich experience in ____ society.

A.the; the

B.a; 不填

C.不填;不填

D.不填;the

考点:不定冠词定冠词零冠词
题型:选择题

根据短文内容,判断下列句子的正(A)误(B)。

     It's Sunday afternoon. Mr and Mrs White are in a shop. Mrs White likes hats very much. She says,

"Look, this hat is very nice. Do you think so?"

      Mr White looks at it and says,"Do you call that a hat?It looks like a lighthouse. "

      "Don't speak to me like that,"Mrs White says. She puts the hat on and looks at it in the mirror.

      Mr White sits down. But Mrs White looks in the mirror for a long time.

      "You have many hats. Don't buy this one. "says Mr White.

      "You have many ties. And you bought one this morning. "says Mrs White. 

      "A man can never have too many ties,"says Mr White.

      "Then a woman can never have too many hats. "says Mrs White. Then she buys the hat.

( )1. Mr and Mrs White go shopping on a Saturday afternoon.           

( )2. Mrs White doesn't like the hat because it looks like a lighthouse.

( )3. Mrs White has many hats at home.                                  

( )4. Mr White bought a tie this morning.                              

( )5. Mrs White doesn't buy anything in the shop.                      

题型:选择题

保险公估机构的董事长、执行董事和高级管理人员如果担任金融、评估机构高级管理人员()年以上或者企业管理职务10年以上,可以不受取得中国保监会规定的资格证书条件的限制。

A.1

B.2

C.3

D.5

题型:选择题

已知抛物线C:y2=2px(p>0)的焦点为F,过F且斜率为1的直线l与抛物线C相交于A,B两点,若线段AB的中点到抛物线C准线的距离为4,则p的值为(  )

A.1

B.2

C.3

D.4

题型:选择题

植物体进行呼吸作用的重要意义是[ ]

A.为生命活动提供能量

B.合成有机物

C.消耗氧气

D.呼出二氧化碳

题型:选择题

(13分)已知:

(1)2ROH R—O—R + H2O (R为烃基,R-O-R为醚)

(2)RCH=CH2+HOCl→RCH(OH)—CH2Cl 或 RCH=CH2+HOCl→RCHCl—CH2OH

试根据下列回答下列问题

(1)(4分)写出结构简式A ________________,C ________________。

(2)(4分)从结构上分析,与A互为同分异构体的可能结构简式有:

__________                        ______。

(3)(2分)上述反应中属于取代反应的是________________________________(填反应序号)

(4)(3分)写出方程式:D+E → F__________________________________________________

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