1.单选题- (共3题)
下列说法中错误的是
A.炭雕作为艺术品可以长久保存 | B.炭雕能吸附室内微量的有害气体 |
C.摆放炭雕时必须远离火种 | D.将制炭雕的下脚料末与氧化铜粉末共热,不能发生反应 |
A.点燃混合气体,使一氧化碳转变成二氧化碳 |
B.把混合气体通入石灰水中 |
C.使混合气体通过灼热的氧化铜 |
D.把混合气体从一容器倒入另一容器 |
2.选择题- (共9题)
L/m | 1.0 | 1.1 | 1.2 | 1.3 | 1.4 | 1.5 |
R/Ω | 3.3 | 3.6 | 3.9 | 4.2 | 4.5 | 4.8 |
L/m | 1.0 | 1.1 | 1.2 | 1.3 | 1.4 | 1.5 |
R/Ω | 3.3 | 3.6 | 3.9 | 4.2 | 4.5 | 4.8 |
L/m | 1.0 | 1.1 | 1.2 | 1.3 | 1.4 | 1.5 |
R/Ω | 3.3 | 3.6 | 3.9 | 4.2 | 4.5 | 4.8 |
C
Volunting is to lend a hand and make someone else's day a little easier. There are many organizations in your own company that would welcome your help. Volunteering can also lead to a playing job. Follow these steps to become a volunteer today.
Instructions
1). Write a list of all your skills. You may have a job or a hobby that could help other people. Look at your list and decide on how you can use these skills to help a local organization.
2). Research agencies(服务机构) in your area and find out which needs volunteers. Often non-profit (非盈利的) organizations welcome volunteers for all kinds of tasks.
3). Ask friends if they know anyone who needs a volunteers for all kinds of tasks.
4). Talk to members of your community centre. You may be able to help another member of the organization.
5). Check with your local school. Many schools welcome volunteers. Volunteers help teachers prepare something during the teaching in the classroom.
6). Write a resume (简历) and letter. Resumes show what you have done and what you can do. The letters show your skills and desire (意愿) for being a volunteer. Use resumes and letters to show organizations that you are serious about volunteering.
7). Search the Internet for volunteer opportunities. Visit websites such as volunteer.ca and volunteering. com for information on being a volunteer.
(D)
How to talk to someone you don't know? It depends on the situation(情形).
If one of your friends introduce you to a new friend, it would be OK to start talking about the person who introduces you. You may ask him/ her how they knew each other. Show you are interested in it, even if you aren't. Nod after he/ she talks. This will give you more time to listen to what he/ she says, and think about next question from his/ her talking.
Now if you go to a class on the first day where you do not know anyone, the first thing you should remember is not to be shy when talking to other people. You may remember when you were in the first or second grade, someone would just walk up to you and talk to you. Be open, but think before you talk.
When it comes to meeting people face to face for the first time, find a situation which both of you are in. Maybe you are sitting next to each other. Maybe the other person says something you don't understand. Find a situation that seems proper (恰当的). Start with a simple conversation. It may seem strange at first. But the more you talk and take action with them, the more they will like you.
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浮{#blank#}6{#/blank#} 漱{#blank#}7{#/blank#} 谣{#blank#}8{#/blank#} 毫{#blank#}9{#/blank#} 摸{#blank#}10{#/blank#}
Lady Gaga is one of the most famous American {#blank#}1{#/blank#} (sing). She {#blank#}2{#/blank#} (win) two Grammy (格莱美奖) at the 52 Grammy Awards in 2010. Born on March 28, 1986 in New York, Lady Gaga made music when she could talk. She likes working with her left hand. She is so clever {#blank#}3{#/blank#} she learned {#blank#}4{#/blank#} play the piano at the age of four and went on
{#blank#}5{#/blank#} (write) her first piano balled at 13. She began acting at the age of 14.
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3.填空题- (共5题)
(1)植物光合作用得到的单质_______;
(2)汽油中加入乙醇可以减少污染_________;
(3)石膏主要成分硫酸钙中含有的阴离子
(4)氧化铁中铁元素显+3价
(5)由70个碳原子构成的单质分子
(1)人们对水组成的认识是从氢气在氧气中燃烧实验开始的,该反应的化学方程式:
。
(2)水在化学实验中的作用不可忽视。下列做法中,水用来隔绝空气的是 (填序号);

(1)人类从远古时代就懂得钻木取火。钻木之所以能取火,是因为_________________________________。
(2)近年来频繁发生的有关化学品泄漏或爆炸事件一次次给我们敲响警钟。因此,在生产、运输、使用和贮存易燃易爆物时绝不允许违章操作。下列图标与燃烧和爆炸有关的是_______________________。(填写字母)

(3)分别点燃两根火柴,将一根火柴头竖直向上,另一根火柴头斜向下(如图所示)火柴在哪种情况下更容易持续燃烧____________________,原因是____________________ 。(4)烧木材时,常把木材架空一些,其目的是

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【1】题量占比
单选题:(3道)
选择题:(9道)
填空题:(5道)
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【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:0
5星难题:0
6星难题:6
7星难题:0
8星难题:1
9星难题:1