2012年5月18日开始，伦敦奥运圣火只在英国境内传递。采集圣火的唯一方式是在奥

发布时间：2017-08-08 21:14 │ 来源：www.tikuol.com

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问题：

2012年5月18日开始，伦敦奥运圣火只在英国境内传递。采集圣火的唯一方式是在奥林匹克的赫拉神庙前利用凹面镜集中阳光来引燃火种。下列说法不正确的是[ ]

A．阳光为火种的燃烧提供了热量，使其达到着火点

B．火炬燃烧时，化学能转化为热能和光能

C．强风和大雨下火炬仍可以保持燃烧，是因为火炬燃料的燃烧不受燃烧的条件影响

D．火炬内装的燃料丙烷(C₃H₈)属于有机物

考点：燃烧与燃烧的条件化学反应中的能量变化有机化合物和无机化合物

题型：选择题

如图（甲）所示的电路图研究灯泡L（2.4V，1.0W）的伏安特性，并测出该灯泡在额定电压下正常工作时的电阻值，检验其标称的准确性．

（1）在闭合开关S前，滑动变阻器触头应放在______端．（选填“a”或“b”）

（2）请按电路图（甲）连接好实物图．

（3）按电路图（甲）测出的电阻值比真实值偏______（选填“大”或“小”）．根据所得到的图象如图（丙）所示，求出它在额定电压（2.4V）下工作时的电阻值R=______Ω．

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配对阅读阅读左栏五位学生的信息，然后与右栏的广告配对。

小题1: Hector is often weak and tired. And he wants to know some ways to become healthy.
小题2:Vince has a toothache. He is going to see a doctor.
小题3: Julia wants to take her summer holidays in Australia.
小题4:Mary hears many poor children can’t go to school. She is glad to go to the concert to raise(筹集) money for these children.
小题5:Diana is going to buy a camera. She wants to take some photos in her hometown and show them to her classmates.

A．Sunshine Hotel
It’s in the north of Guangzhou. And it has 60 bedrooms. You can have three meals a day in it. Open all year round.

B．A concert in the Blue Theater
Some famous singers will show up at the concert next month. They plan to give all the ticket money to poor children.

C．East Camera Shop
Here you can find different kinds of digital cameras. A Canon digital camera with 16 million pixels(像素) is on sale for only 2,000 yuan. Our address is No. 15, Heping Road.

D．John’s Clinic(诊所)

A famous dentist is here. He will give you some advice on your teeth. Come here at 8:30 am to 4:00 pm.
E．Spring Travel Agency
If you tell us when you want to travel, we’ll give you a perfect trip. Our telephone number is 3289-9523.
F．A documentary about health
You can watch a documentary about health in the school hall at 6:00 pm on Wednesday. It tells us how to keep healthy and become healthy.
G．Big Screen Cinema
Next Sunday you can watch The Lorax in our cinema. It’s a great 3D cartoon movie from America.

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题型：选择题

义齿初戴时出现疼痛的原因包括( )

A．组织面有塑料小瘤
B．骨突处缓冲不够
C．基托边缘过长
D．咬合不平衡
E．以上均正确

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某数据库文件有字符型、数值型和逻辑型三个字段，其中字符型字段宽度为5，数值型宽度为6，小数位数为2，库文件中共有100条记录。则全部记录需要占用的存储字节数目是( )。

A．1100

B．1200

C．1300

D．1400

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题型：选择题

翻填处理水沟浪窝、天井、陷坑时，不包括（）。

A.清基开挖

B.削缓沟壁

C.分层回填夯实

D.新修排水设施

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