［物理选修3-5模块］[
（1）下列叙述中符合物理学史实的有（    ）

A．托马斯·杨通过对光的干涉现象的研究，证实了光具有波动性

B．卢瑟福通过“α粒子散射实验”的研究，发现了原子核是由质子和中子组成的

C．麦克斯韦验证了电磁场理论，提出了光是一种电磁波

D．贝克勒尔发现了天然放射现象，并提出了原子的核式结构学说

（2）如图所示，光滑水平路面上，有一质量为m₁=5kg的无动力小车以匀速率v₀=2m/s向前行驶，小车由轻绳与另一质量为m₂=25kg的车厢连结，车厢右端有一质量为m₃=20kg的物体（可视为质点），物体与车厢的动摩擦因数为μ=0.2，开始物体静止在车厢上，绳子是松驰的．求：

①当小车、车厢、物体以共同速度运动时，物体相对车厢的位移（设物体不会从车厢上滑下）；
②从绳拉紧到小车、车厢、物体具有共同速度所需时间．（取g=10m/s²）

阅读《甘露的秘密》，回答问题。（6分）
蚂蚁和蚜虫的关系简直可以说是亲密无间的，有时候，你会看到一群蚂蚁背着蚜虫川流不息地跑来跑去，那是蚂蚁在给蚜虫搬家。当蚜虫在一片植物上大肆蚕食，只剩下残茎败叶之后，蚂蚁就把这群祸害转移到另一处食物充足的地方去，使蚜虫能够饱食终日，好排泄出更多的蚜蜜来。在蚂蚁搬家的时候，也不会丢下为它提供美餐的好朋友不管。确定了新居之后，小蚂蚁就会把蚜虫一个一个搬到附近的植物上去。蚂蚁不仅是蚜虫的“卫士”，还是蚜虫的“保姆”。冬天临近了，雌蚜排出了一个个越冬卵。蚂蚁很担心这些卵会被冻坏，便不辞劳苦地把它一个个搬到外面晾晒，晒完后再搬回巢去。到了次年早春，蚜卵孵化了，这下又忙坏了小蚂蚁，它又主动承担了喂养小蚜虫的任务。直到春暖花开，蚂蚁又把小蚜虫一个个搬出洞来，放到植物上，让它去啃食鲜嫩的茎叶，以便自己从它的屁股后面捞取一点蚜蜜。（选自《中学生必读文库》）
【小题1】文中起过渡作用的句子是：（2分）
________________________________________________________________________
【小题2】蚂蚁是蚜虫的保姆，它作为保姆要为蚜虫做哪几件事？（3分）
________________________________________________________________________
【小题3】从全文看，捞取一词体现了作者对蚂蚁怎样的态度？（1分）
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The Guidance Department （教导处）at Berryville High School has a staff of eleven teachers. Most of their work is done with the students. But the staff sees a lot of parents, too.
“Parents meetings make clear monthly diagram（图表）.”says Mildred Freman, head of the Guidance. “This diagram stays much the same from year to year. The busy months are October, March and May. ”
September, the beginning of a new school year, starts rather slowly. Few parents come in. Most of these want to talk about the schedules. October brings many problems caused by some students. Some parents are called in. Others come by themselves. Things quiet down in November. December is a quiet month. “It’s the holiday. ”Ms Foreman says, “People want to come in, I know, but they decide to wait until after New Year’s Day.”
Report cards go home just before Christmas holidays. Bad marks bring parents in as school opens again. This happens again in March, another report card month. May is always the year’s busiest month. That’s when parents begin to think that their children may be asked to stay in the same grade again. They come in to see if anything can be done before things are decided in June.
【小题1】The teachers in the Guidance Department usually ______.

A．do most of their work for the students

B．answer all the questions from parents

C．help other teachers get along with students and parents

D．only bring report cards to students and parents

【小题2】In December parents usually ______.

A．stay at home with their children for their holidays

B．wait for the teachers to bring report cards to their children

C．wouldn’t like to visit the teachers in the Guidance Department

D．let teachers have a good rest during their holidays

【小题3】Why do some parents come to school in March? Because ______.

A．they want to see their children’s teachers after Christmas holidays

B．they are called by the teachers of Guidance Department

C．bad marks have them do it

D．it’s the beginning of a new school year

【小题4】Which of the following is Right?

A．In June the school decides who will stay in the same grade again.

B．Almost all the parents come to meet Mildred Foreman every month.

C．April is also the second busiest month for the staff.

D．The parents help to do most of the work for the staff.

1.另一方面，如果我直接给她钱，她可以自己选一张。

　　_____ _____ _____ _____, if I give her money, she can choose one herself.

　　2.顺便问一下，你认为这个队的水平如何?

　　_____ _____ _____, what do you think about this team?

　　3.我们不知道当时他为什么不挽救Tom的生命。

　　We don’t know why he didn’t _____ _____ _____at this time.

　　4.这没什么，我也很欣赏你在改善整个办公气氛方面所做的一切。

　　_____ _________ _____. I also appreciate what you have done to improve the

atmosphere of the entire office.

　　5.她看上去像50岁，但事实上她已经60多了。

　　She looks 50 but _____ _____ she's more than 60.

　　6.结果，生活从你身边经过而没有给你留下任何印象。

　　_____ _____ _____, life passes you by without registering on you.

　　7.人们希望身体好，并希望有好的生活习惯。

　　People wish to be _____ _________ __________ and to have good living habits.

　　8.在你学骑自行车时，你常常会从车上摔下来。

　　When you are learning to ride a bicycle, you often _____ _____.