9．如圖4所示，在將磁鐵插入銅質(zhì)漆包線繞制的線圈的過程中，電流表的指針會擺動. 這個現(xiàn)象所反映的物理原理，在下列電氣設(shè)備中得到應(yīng)用的是(　　　 )

A．電磁起重機　　　　　　　　 B．發(fā)電機　

C．電動機　　　　　　　　　　 D．電磁繼電器

8．眼睛是心靈的窗戶. 關(guān)于眼睛及其視力矯正，下列說法正確的是　　　 (　　 )

A．眼睛的晶狀體相當于凹透鏡

B．物體通過晶狀體所成的像是虛象

C．近視眼看不清遠處景物，是因為景物的像落在視網(wǎng)膜后方　

D．用來矯正遠視眼視力的眼鏡鏡片是凸透鏡

7．雨的形成是與自然界中水循環(huán)相關(guān)的復(fù)雜過程. 地球上的水升騰到高空變成水滴，成為云

的主要組成部分. 當滿足一定條件時，云中的水滴先后要經(jīng)歷轉(zhuǎn)變?yōu)樗�蒸氣、小冰晶等過

程，才能形成雨落向地面. 那么，從云中的水滴到降雨的過程中，水先后經(jīng)歷的物態(tài)變化是(　 )

A．液化、汽化、凝固　　　　　　　　　 B．升華、凝華、熔化

C．汽化、凝華、熔化　　　　　　　　　 D．液化、凝固、熔化

6．將適量的橡皮泥捏黏在鉛筆的一端(能使鉛筆豎直浮在液體中)，這就制成了一個很有用的土儀器. 將它分別放到盛有不同液體的杯中，靜止時的情景如圖3所示. 對于這個土儀器所運用的知識或用途，下列說法中不正確的是(　　　 )

A．運用了二力平衡的知識　　　　

B．運用了物體的漂浮條件

C．用它可以比較不同液體密度的大小

D．用它可以測出液體密度的大小

5．在日常生活中，我們常有下列一些經(jīng)歷或體驗. 其中，與物理學(xué)中所說的慣性有關(guān)的是(　　 )

A．明知自己的某個習(xí)慣動作不好，可是很難在短期內(nèi)徹底改正

B．公交車往往是開開停停，因而給乘客們帶來后仰前俯的煩惱

C．提著較重的物體走路，時間長了會感到手臂肌肉酸痛

D．長時間看書，突然抬頭看遠處的景物會感到模糊

4．超聲波是人耳聽不見的聲音，但它有著廣泛的應(yīng)用. 在下列設(shè)備中，利用超聲波工作的是(　 　)

A．驗鈔機　　　 B．微波爐　　 C．電視遙控器　　　 D．潛艇上的聲吶系統(tǒng)

3．人體的運動系統(tǒng)相當復(fù)雜，但最基本的運動形式是，骨骼在肌肉提供的動力作用下繞關(guān)節(jié)轉(zhuǎn)動. 如圖2所示是手端起茶杯的情景，其前臂骨骼相當于杠桿，肱二頭肌收縮提供動力. 由圖可以看出，這是一個(　　 )

A．費力、省距離的杠桿　　　　　　 B．省力、費距離的杠桿

C．既費力，也費距離的杠桿　　　　 D．既省力，也省距離的杠桿

2．在新型飛機研制中，將飛機放在風(fēng)洞中固定不動，讓模擬氣流迎面吹來，便可以模擬空中的飛行情況. 此時，機艙里的飛行員感覺飛機在飛行，則他所選的參照物是(　 )　　　　 　

A．飛機　　　 B．模擬氣流　　 C．地面　　 D．他本人

1．如圖1展示了日常生活或生產(chǎn)技術(shù)中的四種情境，其中哪種情境運用了增大壓強的知識？(　 )

3、提示語： snacks 各種零食

A healthy diet and regular exercise may help to prevent obesity(肥胖) among children, take Li Ming for example.

Li Ming used to be a healthy boy, but

[參考范文]

A healthy diet and regular exercise may help to prevent obesity among children. Take Li Ming for example.

Li Ming used to be a healthy boy. But over a year ago, he got into the habit of eating a lot of junk food and snacks. Besides, he spent a lot of time lying on the sofa, watching TV, and did little exercise. As a result, he put on so much weight that he found it difficult to climb the stairs.

So Li Ming decided to change the unhealthy life style. He began to have a balanced, healthy diet. He also took part in various sports activities such as swimming, skating, running and playing basketball. Months later, Li Ming became as fit as before.

Passage 50

(湖南省長沙周南中學(xué)2007屆高三第一次模擬考試)

請根據(jù)下面提示，寫一篇短文。詞數(shù)不少于100字。

You are living in the Rose Residential Area (居住小區(qū)), which is newly-built and not very large. Yet, as the picture shows below, at the back of the residential area is a large empty space. People living here are always giving their ideas about how to use it.

Now you describe WHAT should be done with it and tell WHY as well.

[參考范文]

Generally speaking, the Rose Residential Area is a comfortable place with the necessary facilities, including a primary school and parking lots. Yet it’s a pity that it lacks some green spaces. So in my opinion, we should build a garden there in the empty space at the back, with various trees and bushes, flowers and plants, and even fountains. Then we can build paths in the garden, on either side of which can be benches. And at one end of it, we can build a small playground, where we can do some sports.

By the time everything is done, we can spend time there enjoying much of nature. We can walk and play there to relax after a day’s work.

In addition, with the garden well planned and designed, we can also learn about plants and gardening.

I hope my dream will come true and we will surely have more perfect conditions and surroundings.