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问题 选择题

如图a所示，光滑固定轨道MO和ON底端对接，且ON >MO，M、N两点高度相同。小球自M点由静止自由滑下，忽略小球经过O点时的机械能损失，以a、F、E、EK分别表示小球的加速度、合力、机械能和动能四个物理量的大小。在图像b中能正确反映小球自M点到N点运动过程的是

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题目分析：物体在MO段做匀加速运动，在ON段做匀减速运动，且MO段的加速度大于ON段的加速度，选项A正确；物体在MO段和ON段受合力恒定，且MO段的合力大于ON段的合力，选项B错误；物体在MO段和ON段机械能守恒，选项C错误。物体在MO段动能满足，所以Ek与t2成正比；同理在ON段，物体动能随t2成线性减少，选项D正确。

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第二节信息匹配（共5小题；每小题2分，满分10分）

第二节 信息匹配(共5小题；每小题2分，满分10分)

阅读下列应用文及相关信息，并按照要求匹配信息。请在答题卡上将对应题号的相应选项字母涂黑。

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56.                                               May 15，2006

Gentleman,

The enclosed advertisement for your organization comes from the April issue of    Cosmopolitan. I am interested in doing volunteer work for abused children and would 1ike to have your information booklet. My address is as follows:

6 Villa Maurice，

92160 Antony France

Yours truly，

D. Gruber

57.                                               January 15, 2006

Dear Sir or Madam，

I am interested in writing adventure stories for children. Please send information on the course you offer to the following address:

5481 Torrance Blvd，

Torrance, CA 90503

Yours faithfully，

Irene Ponbs (Ms)

58.                                              April 14，2006

Dear Sir or Madam,

I am interested in finding a part-time job in the morning. Please send information to the following address:

2955 Pacific Coast Highway,

Torrance, CA 90505

Sincerely,

M. E. Nielson (Mr)

59.                                              1068 Baxter Road,

Loveland, Ohio 45140

March 13，2006

Dear Sir or Madam,

Please send me your catalog and information on the service you offer. I have a small business and have been robbed several times.

Yours truly，

J. Barnes

60.

Am Frankenheim 21,

5000 Koln 40 Germany

June 1, 2006

Dear Sir,

I would like to receive the list mentioned in your recent advertisement, as well as more information about L.A. Parent. I enclose a self-addressed envelope.

Yours faithfully,

H. Wolf
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单项选择题

各测试设备使用部门、单位应建立测试设备（），并设专人管理，在信息发生变化时及时更新。

A.清单

B.统计表

C.台账

D.档案
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