2．下列句子中有错别字的一句是

A．出口疲软，消费低迷，种种手段难以有效促进经济增长，而固定资产投资可以产生立竿见影的效果，因而备受关注。

B．这个民间广为流传的故事，情节跌宕起伏，想象空间很大，如果有人感兴趣，足可以把它改编为一部悬念丛生，高潮迭起的电视连续剧。

C．这次青海玉树抗震救灾，再次反应出了大型挖掘设备无法运进的问题，这实际上再次暴露了中国直升飞机的建设严重滞后的问题。

D．君山岛文化底蕴深厚，历代文人墨客或赋诗，或题字，留下无数千古绝唱，像“白银盘里一青螺”类的诗句,使君山名声大噪。

1．下列词语中加点字的读音全都正确的一组是

A．嶙峋(xín)　 对峙(zhì)　　 犒劳(kào)　　 追本溯源(sù)

B．乜斜(miē)　 散步(sǎn)　　 骁勇(xiāo)　　 不屈不挠(náo)

C．门楣(méi)　 锃亮(cènɡ)　　 刷白(shuà)　　 洗洗涮涮(shuàn)

D．醇厚(chún)　切磋(qiē)　　　 削价(xuē)　　 差强人意(qiánɡ)

84. When will the new parking enforcement formally start? (No more than 3 words )

SECTION C

Directions: Write an English composition according to the instructions given below in Chinese

假如你是某中学高三学生，名叫李华。你用英语写一篇日记，记叙你班今天下午举行的主题班会“再会，我亲爱的学校！”的情况。

说明：应根据以上提示内容作适当发挥，要求文理通顺。

词数：不少于120词。

注意：开头已给出，不计入总词数。

May 26, 2010　　　 Wednesday　　　　　 Fine

83. How will a driver be punished if he disobeys the regulations in the period of the awareness campaign? (No more than 7 words )

82. What does Dan Chalkley think of CCTV? (No more than 4 words )

　● There would be 　78　 .

　● The sea level could rise 　79　 　this century.

●　　 Millions of homes would be flooded.

●　　 Many people would beturned into 　80　 .

SECTION B

Directions: Read the following passage. Answer the questions according to the information given in the passage and the required words limit. Write your answers on your answer sheet.

Cameras will record city’s illegal parkers

CCTV cameras are to be used in the heart of London for the first time to catch motorists causing traffic jam by parking on double yellow lines and vans unloading illegally.

　 About 20 cameras have been set up in the West End to detect and fine vehicle owners who park illegally, in an effort to keep traffic flowing and reduce traffic jam.

　 The scheme, which could eventually be extended nationwide, will also be used to spot and prosecute(起诉) people who attack parking attendants.

　 Although the cameras are primarily for parking offences, the police will be allowed to access to film footage(录象资料).

　The introduction of the CCTV cameras by Westminster City Council follows an eight-week trial that resulted in a marked improvement in traffic flow. The trial showed that the number of offences committed trailed off(减弱,) over the time of the study and fewer penalty(处罚) notices were challenged.

　 Over the next three weeks Westminster is running an awareness campaign to inform drivers about its new parking enforcement. During this time motorists who disobey the regulations will be issued with a warning. After that, parking tickets will be issued.

　 The main focus of the new scheme is on double yellow lines and loading bays in areas such as Piccadilly, the Strand, Oxford Circus and Soho.

　 Dan Chalkley, Westminster council’s cabinet member for economic development and transport, said, “Our pilot scheme proved that CCTV is reliable and cost-effective.”

　 Paul Watters, the AA’s head of roads and transport policy, said, “A camera won’t spot the blue badge or note on the windscreen about the car being broken down.”

81. What’s the purpose of fixing CCTV cameras in the heart of London? (No more than 7 words )

　● 　75　 , a tiny country in the Pacific Ocean, will be flooded by the sea water.

　● Venice, 　76　 　in Italy,will sink another 20-50cm by 2050.

　 　72　 　→ global warming →　 73　 　→sea level rising

24．(20分)

低碳经济已引起高度关注，其核心是利用绿色能源和可再生能源，减少能量应用过程中的CO₂排放，为此某探究活动小组设计了如下图所示的节能运输系统。斜面轨道倾角为37°，斜面底端固定了轻弹簧，轻弹簧原来为原长，轻弹簧上端与轨道顶端的距离L=10m，运输用载货箱M与轨道间的动摩擦因数为μ=。载货箱在轨道顶端时位于顶端的装卸工将质量为m₁的货物装入货箱，然后载货箱载着货物沿轨道无初速滑下，当轻弹簧被压缩至最短时，位于底部的两装卸工立刻将货物m₁卸下，同时在载货箱中装入货物m₂。然后载货箱和货物m₂在弹簧的作用下被弹回到轨道顶端，在顶端的装卸工又取下m₂装上m₁，然后重复上述过程。若M=5kg，m₁=44kg，(sin37°=0.6，cos37°=0.8，g=10m/s²)，问

(1)当载货箱和货物m₁下滑至刚接触轻弹簧时的速度大小是多少？

(2)若载货箱和货物m₂在弹簧的作用下被弹回到轨

　　 道顶端时速度恰好为零，则m₂的质量为多少？

23．(16分)

如图所示，在y轴竖直向上的直角坐标系中，电场、磁场的分布情况如下：

(Ⅰ)在y＜0区域内，存在沿y轴正向的匀强电场；

(Ⅱ)在y＜y₁区域内，同时存在垂直xoy平面向外的匀强磁场B。

质量为m、电量为q带正电的小球A，从xoy平面内第二象限的P点以初速v₀向右水平抛出。

小球A恰好过坐标原点O，方向与x轴成60°，之后沿直线运动到达磁场区，且小球A能够第二次到达原点O，其中B、m、v₀、q为已知量，重力加速度已知为g。

试求：(1)电场强度E的大小；

(2)小球A两次通过O点经历的时间间隔。