班轮运价表中，M代表计收运费是按（）。 A.重量计收 B.体积计收 C.体积或重量计

下列各种环境下的离子组合中，离子不能大量共存的是（   ）

A．无色中性溶液：Mg²⁺、Fe³⁺、SO₄^2-、Cl^-

B．pH=0溶液：Al³⁺、NH₄⁺、Mg²⁺、HSO₄^-

C．[H⁺]=10^-10mol/L溶液：Na⁺、AlO₂^-、S^2-、S₂O₃^2-

D．[H⁺]＞[OH^-]的溶液：Fe³⁺、ClO^-、I^-、NO₃^-

新蓄电池在出厂时没有加装电解液，电解液是由使用者加注的。加注时电解液液面应高出极板上沿（）mm。加注电解学文件一，蓄电池应静置（）小时，待温度低于350C才能进行充电。

I moved into a new house in July. Since then I have met a few of my neighbors who are very nice people. For Christmas, I thought I would do something nice for each of the neighbors I know. There were nine neighbors whom I knew by name or spoke with often when I was out in my yard. I knew which houses they lived in.

I decided to add one more to my list. This lady I decided to add lives down the street from me. I meet her every morning walking to work as I drive down the street. She always smiles to me. But I had no idea who she was and which house she lived in.

I planned to make small fruit baskets and leave them on my neighbor's front porches (门廊) on Christmas Eve. I signed the cards: “Happy Holidays from 5104 Northumberland Road.”

I saved the last for the friendly lady. I finally decided on a house where I met her each morning and guessed that it was hers.

My neighbors really appreciated the baskets and would tell me as they saw me in the yard or they would call, and a couple even came by to thank me.

This morning I found a small note in the mailbox. It was addressed simply: Resident, 5104 Northumberland Road.

The Thank You card really caught me by surprise. I opened it and read the message, “Thank you for the lovely fruit basket you left on our porch. It was very thoughtful. Richard Kelly passed away last week. He talked a lot about how nice it was that someone remembered him in his time of illness. He really appreciated it.”

I had no idea who Richard Kelly was and that he had been seriously ill. I had left that nice lady’s basket on his porch by mistake. I wanted to say sorry, but that would be wrong. I believe that Mr. Kelly was meant to have that basket because he was dying. I hate that the nice lady did not get to receive a fruit basket on Christmas, but I believe if she knew what had happened, she would be happy. I feel pleased to have helped Richard Kelly's last days be more cheerful.

小题1:How many Christmas gifts did the author intend to send?

A．9.

B．8

C．10

D．11小题2:Where did the friendly lady live?

A．She lived at the end of Northumberland Road.

B．Her address was 5104 Northumberland Road.

C．She was thought to share a house with Mr. Kelly.

D．The author was not sure about her address at all.小题3:How did the author’s neighbors respond to his gifts?

A．They liked the gifts very much and were thankful.

B．They were thankful that they wanted to be friends.

C．They all made phone calls to say “Thank You”.

D．They all visited him by person to show gratitude.小题4:What does the author mean in the last paragraph?

A．He was regretful that the nice lady didn’t receive his gift.

B．He was glad to have made Mr. Kelly's life more pleasant.

C．He thought Richard Kelly deserved to receive that basket.

D．The old lady was happy to sacrifice to make Kelly happy.

在数据字典中描述数据流时，用符号{}表示“（）”，即括号中的项要重复若干次。