1.综合题- (共2题)
①同位素 ②同素异形体 ③同分异构体 ④同系物 ⑤同种物质
物质 | 红磷 | 氯仿与 | 氕与 | 新戊烷与 | 2-甲基戊烷与 |
名称 | 与白磷 | 三氯甲烷 | 氘、氚 | 2,2-二甲基丁烷 | 2,3-二甲基丁烷 |
相互关系 | ______ | ______ | ______ | ______ | ______ |
(2)

(3)

(4)2,4-二氯甲苯的结构简式为___________________________;
(5)反-2-戊烯的结构简式为________________________________;
(6)某物质结构如图所示,其官能团是__________,___________;分子式为________________;

该物质可以与下列___________(填序号)发生反应。
A.酸性KMnO4溶液 | B.氢气 | C.溴水 | D.NaOH溶液 |
乙炔是一种重要的有机化工原料,以乙炔为原料在不同的反应条件下可以转化成以下化合物。

完成下列各题:
(1)正四面体烷的二氯取代产物有________种。
(2)关于乙烯基乙炔分子的说法错误的是________。
a.能使酸性KMnO4溶液褪色
b.1 mol乙烯基乙炔能与3 mol Br2发生加成反应
c.乙烯基乙炔分子内含有两种官能团
d.等质量的乙炔与乙烯基乙炔完全燃烧时的耗氧量不相同
(3)写出与苯互为同系物且一氯代物只有两种的物质的结构简式(举一例)________________。
(4)写出与环辛四烯互为同分异构体且属于芳香烃的物质发生加聚反应的反应方程式_______________。
(5)乙烯基乙炔可与HCl反应生成2-氯-1,3-丁二烯,写出2-氯-1,3-丁二烯加聚反应的反应方程式_______________。
2.推断题- (共1题)
1,4-环己二醇可通过下列路线合成(某些反应的反应物和反应条件未列出):

(1)写出反应④、⑦的化学方程式:
④______________________________________________________________;
⑦______________________________________________________________。
(2)上述七个反应中属于取代反应的有____________(填反应序号)。
(3)反应⑤中可能产生一定量的副产物,其可能的结构简式为_____________________________________________。
3.选择题- (共5题)
Many of us don't pay much attention to the importance of eye care. It is said if you take care of your body, then you can surely be healthy. That is why our eyes should be given a lot of care. Natural eye care should be put in a number one place.
There are several causes leading to poor eyesight like not enough food, genes(基因)and aging(老化). Televisions, computers and reading are also the causes of having poor eyesight. If you happen to work in front of the computer, it is best to take a break every once in a while. Something dirty can cause redness and they will make you feel uncomfortable. It is bad for your eyes, too. If this happens, the best way is to clean your eyes by using cold water. You must also try your best to protect your eyes from harmful things. For example, sunglasses are not just for fashion but they can also serve as a great way to protect your eyesight from UV rays.
Eating healthy foods will do good to your eyesight. Remember that vitamins A, C and E are good for eyes. Try to eat food groups that have these vitamins. And you should do eye exercise protects your eyesight, too. If a person exercises regularly (定期的) and eats the right kind of food, his eyes will stay in good condition for a long time.
All above are natural ways of eye care that help us keep healthy eyes. Being happy all the time can be helpful to a person's eyesight, too. All in all, eye care is very important, no matter how old a person is.
Now students' English handwriting(书法)gets worse and worse. That makes their teachers feel worried. Is your English handwriting beautiful? If n{#blank#}1{#/blank#} , here are four steps that really work!
Use paper with lines
Using paper with lines can keep you writing straight i {#blank#}2{#/blank#} of up or down when you write English words or sentences. Those lines on the paper can help you to write words in the right size. Be s {#blank#}3{#/blank#} to fill the lined space completely. And make sure those capital letters(大写字母) are written properly.
Slow down
If your writing is hard to read, try slowing down a little. For some kids, going slower makes the handwriting clear. If you write too q {#blank#}4{#/blank#} , it's hard for you to stop where you should, and even worse, you may make more m{#blank#}5{#/blank#} .
Hold your pencil right
When you hold your pencil the correct way, writing is much e{#blank#}6{#/blank#} . Some kids press down really hard when they write. That makes the handwriting not nice. Try to be relaxed and don't hold the pencil so hard. Let your writing appear nice and clean. If you do so, people will guess you are a student w{#blank#}7{#/blank#} a good habit.
Draw more pictures
Drawing can improve your handwriting. You need to use the skills to control your pencil better w{#blank#}8{#/blank#} you are drawing pictures. Even though you have no chance to draw at school, you can practice by y {#blank#}9{#/blank#} at home.
Handwriting is very important. Imagine you are a world-famous movie star or a well-known sports player, what do you do when your f {#blank#}10{#/blank#} run up to you? Give them your autographs(亲笔签名), of course!
根据句意从方框中选择合适的单词,并用其适当形式填空,使句子通顺。
nine surprise direct different decide |
(1)Mr. Black is one of the most famous{#blank#}1{#/blank#} in the world. Many young people like the films directed by him.
(2)His family live on the{#blank#}2{#/blank#} floor of the highest building in our town.
(3)There is no time left, you should make a{#blank#}3{#/blank#} at once.
(4)The films with {#blank#}4{#/blank#} endings can always make people excited.
(5)He is strange and hates to be like others, he always tries to do everything {#blank#}5{#/blank#} .
The advantages of Eating Fruits & Vegetables
Vegetables and fruit are good for your health because of a lot of vitamins, nutrients(矿物质) and fiber(纤维)in them. Fruits and vegetables are regarded as a healthy diet without adding chemicals or additives(添加剂) for carrying or storing foods. The United States Department of Agriculture suggests eating plenty of fruits and vegetables every day to get the advantages of eating a healthy diet.
Disease Prevention
The United States Department of Agriculture tells that eating fruits and vegetables helps fight strokes, cardiovascular disease and type 2 diabetes. Because of the potassium in fruits and vegetables, they can prevent the risk of developing kidney stones. The fiber in fruits and vegetables helps the body fight against coronary heart disease.
Idea Health
Since fruits and vegetables add to a balanced and healthy diet, eating these will help you with your idea. The vitamins in fruits and vegetables helps fight depress(沮丧), according to the Mental Health Foundation. Vitamin B and folic acid found in some vegetables and bananas help you to relax. Eating fruits and vegetables can also help improve memory.
Healthy Weight
Eating fruits and vegetables helps you have a healthy weight. Fruits and vegetables naturally include less energy than other foods, according to the Center for Disease Control and Prevention. The fiber and water in the fruits and vegetables make you feel that you are full, so you will not feel that you have to eat more food.
The earth has warmed by about 1°F (华氏度) over the past 100 years, but why and how?
Well, scientists are not quite sure. Maybe the earth gets warmer and warmer on its own. But many scientists say that people are doing many things which makes the earth warmer.
First, greenhouse effect (温室效应) is a very important reason for the change of the earth. People give out too much energy into the air every year. It makes the earth warmer. Climate (气候) change is another important reason. Sometimes it becomes too hot and sometimes too cold. Sometimes there is too much rain and sometimes too little. The change of the climate makes the earth warmer. In turn, the warmth of the earth changes the climate, too.
When the earth becomes warmer, there may be more rain and a rise in sea level. It will affect the growth of plants, animals and people. On a Pacific island, 100 people have to move to higher ground because the sea is rising. These people can no longer live on the coast. Before that, two islands without people went underwater in 1999. Scientists say that the seas can rise by nearly one metre by 2100.
People can affect the earth's air, land and water. As for us, we can do many things to protect the earth. For example, we can use fridges less. We can tell more people about protecting the earth.
4.单选题- (共4题)
A.煤、石油、天然气都是可再生能源 |
B.石油主要含有碳、氢两种元素 |
C.通过石油的催化裂化和裂解可以得到较多的轻质油和气态烯烃 |
D.利用煤的干馏,可以得到焦炭、煤焦油和焦炉气 |
5.多选题- (共1题)
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【1】题量占比
综合题:(2道)
推断题:(1道)
选择题:(5道)
单选题:(4道)
多选题:(1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:1
5星难题:0
6星难题:1
7星难题:0
8星难题:3
9星难题:3