试题与答案

进行光合作用的场所是[] A.线粒体 B.液泡 C.叶绿体 D.细胞核

题型:选择题

题目:

进行光合作用的场所是[     ]

A.线粒体

B.液泡

C.叶绿体

D.细胞核

答案:

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参考答案:A解析:抗癫痫药物较多,可根据不同发作类型选择适当药物。一般从单药小剂量开始,逐渐调整到能控制发作而又不出现不良反应或反应很轻的最低有效剂量。更换药物应逐渐过渡。坚持长期规则服药,强直-阵...

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题型:阅读理解

阅读理解。

                                       When milk arrived on the doorstep

     When I was a boy growing up in New Jersey in the 1960s,we had a milkman delivering milk to

our doorstep.His name was Mr.Basille.He wore a white cap and drove a white truck.As a 5yearold

boy,I couldn't take my eyes off the coin changer fixed to his belt.He noticed this one day during a

delivery and gave me a quarter out of his coin changer.

    Of course,he delivered more than milk.There was cheese,eggs and so on.If we needed to change

our order,my mother would pen a note-"Please add a bottle of buttermilk next delivery" -and place

it in the box along with the empty bottles.And then,the buttermilk would magically(魔术般)appear.

    All of this was about more than convenience.There existed a close relationship between families

and their milkmen.Mr.Basille even had a key to our house,for those times when it was so cold outside

that we put the box indoors,so that the milk wouldn't freeze.And I remember Mr.Basille from time to

time taking a break at our kitchen table,having a cup of tea and telling stories about his delivery.

  There is sadly  no home milk delivery today.Big companies allowed the production of cheaper milk,

thus making it difficult for milkmen to compete(竞争).Besides,milk is for sale everywhere,and it may

just not have been practical to have a delivery  service.

    Recently, an old milk box in the countryside I saw brought back my childhood memories.I took it

home and planted it on the back porch(门廊).Every so often my son's friends will ask what it is.So

I start telling stories of my boyhood,and of the milkman who brought us friendship along with his milk.

1.Mr.Basille gave the boy a quarter out of his coin changer ________.

A.to show his magical power

B.to pay for the delivery

C.to satisfy his curiosity

D.to please his mother

2.What can be inferred from the fact that the milkman had the key to the boy's house? 

A.He wanted to have tea there.

B.He was a respectable person.

C.He was treated as a family member.

D.He was fully trusted by the family.

3.Why does home milk delivery no longer exist?

A.Nobody wants to be a milkman now.

B.It has been driven out of the market.

C.Its service is getting poor.

D.It is forbidden by law

4.Why did the author bring back home an old milk box?

A.He missed the good old days.

B.He wanted to tell interesting stories.

C.He needed it for his milk bottles.

D.He planted flowers in it.

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