问题 写作题

第五部分 书面表达(满分25分)
你是外教布朗,在中国一中学从教已两年,现在用英文写一篇150字左右的E-mail 回家给儿子Tom,给儿子介绍中国的清明节(Tomb-sweeping Day)人们的活动情况,并讲讲自已对中国清明节的感受。
节 日
有几千年历史,4月5日;气温开始升高,春耕的大好时节
活 动
携带酒食果品,及纸钱物品等在祖先墓前焚烧;
为坟墓培上新土,插嫩绿新枝,叩头行礼;
也是人们春游踏青,欣赏大自然湖光山色的时候;
还会开展各种文娱活动,增加生活情趣。
意 义
。。。。。。(自已自拟,至少两条)
注意:1. 对所给材料适当整理,逐一陈述,合理连接,不要简单翻译。
2. 词数150左右。开头已经写好,不计入总词数。
3. 文中不得提及所在学校及本人姓名。
Dear Tom,
How are you doing? Here I am in my dormitory, having had supper and having little to do.
____________________________________________________________________________
答案

One possible version:

Dear Tom,

How are you doing? Here I am in my dormitory, having had supper and having little to do. So I’d like to tell you about a traditional festival in China, Tomb-sweeping Day, just to help kill the time.

Tomb-sweeping Day of China, which falls on April 5th, has a history of several thousand years. From this day on, the temperature begins to climb, so this is a good time for spring ploughing.

On this day, people come to the tombs of their ancestors, carrying food and fruit to offer and also burn paper money and other articles which they think can be used by their loved ones in the other world. They decorate the tombs with new earth and fresh tree branches and kowtow before the tombs. Some people go for spring outings to enjoy the beautiful mountains and rivers; others hold various entertainment activities to make life more colorful.

To the Chinese, Tomb-sweeping Day not only focuses on family reunion and food offering, but also purifies their feelings and helps form a sense of family, a sense of belonging. More importantly, through the activities, they obtain more strength to face the future and pursue happiness.

So long. Will talk to you later.

问答题

(1)某学校学生在开展“测金属电阻率”研究性学习活动中,对有关金属(灯泡中的钨丝)、半导体(二极管)、合金(标准电阻)及超导材料的电阻率查阅了大量资料,提出了下列一些说法,你认为正确的有(  )

A.金属温度计是利用金属材料的电阻率随温度升高而不发生显著变化制成的

B.标准电阻是利用合金材料的电阻率几乎不随温度变化而变化制成的

C.半导体材料的电阻率随温度升高而增大

D.当温度为绝对零度时,某种材料电阻率突然为零,这种现象叫超导现象

(2)①在“测金属电阻率”实验中,螺旋测微器测金属丝的直径的读数如图,则直径d=______mm.

②测得接入电路的金属丝的长度为l,已知其电阻大约为25Ω.

在用伏安法准确测其电阻时,有下列器材供选择,除必选电源(电动势1.5V,内阻很小)、导线、开关外,电流表应选______,电压表应选______,滑动变阻器应选______.(填代号)并将设计好的测量电路原理图画在虚框内.

A1电流表(量程40 mA,内阻约0.5Ω)

A2电流表(量程10 mA,内阻约0.6Ω)

V1电压表(量程6V,内阻约30 kΩ)

V2电压表(量程1.2V,内阻约20 kΩ)

R1滑动变阻器(范围0~10Ω)

R2滑动变阻器(范围0~2kΩ)

③若电压表、电流表读数用U、I表示,用上述测得的物理量计算金属丝的电阻率的表示式为ρ=______.

名词解释