1.单选题- (共7题)
A.一定是CO2 | B.一定是CO与CO2组成的混合物 |
C.一定是CO与O2组成的混合物 | D.该气体最多可能由3种物质组成 |
A.瘦肉精分子中含有氮分子 |
B.瘦肉精中碳元素的质量分数最大 |
C.瘦肉精是化合物 |
D.瘦肉精由碳、氢、氧、氯、氮五种元素组成 |
2.选择题- (共6题)
阅读下面短文,从短文后各题所给四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑
On our first anniversary, Jack bought a bottle of Casaque, an expensive cologne(古龙香水)for me. "We agreed to save the money for your postgraduate education", I said somewhat half-heartedly as I took it out from a beautifully-wrapped packet. "I am unable not to give something 1 to the world's most beautiful bride, honey!" I held it to my2, and smelled the most pleasant flavor I could ever3. Looking down at my4blue jeans and ugly, ragged tennis shoes, I wondered if I could ever be worthy of it. But I would 5. I used only a little of it every time 6Jack graduated and our life was financially easier. It's a 7the foolish love of a young husband.
Then one day three-year-old Jim was sitting on the floor8the empty cologne bottle. His lips wet, he was making a(n) 9face. He drank my10cologne! "Jack, come quick," I cried, "can cologne11my baby? Jim drank the rest of it!" "It's mostly just alcohol, honey," Jack12me. Little Jim was fine, and my concern for my child was13. I now felt 14to see the empty cologne bottle.
A few weeks later, Jack bought another bottle of my beloved cologne. I 15it as much as I had done to the earlier one. 16, it became three-quarters empty. I thought it best to buy another 17. But the shop assistant told me that there wasn't even a maker of that brand any more.
Now I only use my special cologne on very important occasions, because there will be18to replace it when these last few precious19are gone. But from the bottom of my heart it's not three-quarters empty but still one-quarter full. Perhaps if I'm very careful, I can 20using it for the rest of my life.
假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。
删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线,并在该词下面写出修改后的词。
注意:1)每处错误及其修改均仅限一词;
2)只允许修改10处,多者(从第11处起)不计分。
In my mind, I could never fancy how ten second of life could change a person's view for his whole existence. A few years ago I experience the worst moment in my life. I was driving home that afternoon. Unfortunately, I didn't make it home as usually because I had a car accident. While I was driving, all of a sudden, but the car in front of me stopped. My car immediately ran into it. Luckily, I wasn't serious hurt. That accident changed way I drive and they taught me a valuable lesson. I also came to the conclusion which life needs to be treasuring.
阅读理解
In the famous fairy tale, Snow White eats the Queen's apple and falls victim to a curse(诅咒);in Shakespeare's novel, Romeo drinks the poison and dies; some ancient Chinese emperors took pellets(药丸)that contained mercury(水银), believing that it would make them immortal, but they died afterward.
Poison has long been an important ingredient in literature and history, and it seems to always be associated with evil, danger and death. But how much do you really know about poison?
An exhibition, The Power of Poison, opened last month at the American Museum of Natural History in New York, intended to give the audience a more vivid understanding of poison.
The museum tour starts in a rainforest setting, where you can see live examples of some of the most poisonous animals: caterpillars(毛毛虫), frogs and spiders. Golden poison frogs, for instance, aren't much bigger than a coin, but their skin is covered with a poison that can cut off the signaling power of your nerves, and a single frog has enough venom to kill 10 grown humans.
"Poisons can be bad for some things," Michael Novacek, senior vice president of the museum, told NBC News. "Yet they can also be good for others."
A poisonous chemical found in the yew tree is effective against cancer, which is what led to the invention of a cancer-fighting drug called Taxol.
The benefits from natural poisons are not limited to just medicine. Believe it or not, many substances(物质)that we regularly ingest(摄入)-chili, coffee and chocolate-owe their special flavors or stimulating(提神的)effects to chemicals that plants make to poison insects.
根据短文内容,选择最佳答案,并将选定答案的字母标号填在题前括号内。
假定你是李华。你的美国外教David回国时,请你帮他找人制作一枚中文名章(name stamp)以作纪念。你已找好制作人。给他写封邮件,告知此事,并请他从所附图片中挑选字体、图案及材料。
注意:1)词数100左右;
2)可适当增加细节,以使行文连贯;
Dear David,
Yours,
Li hua
3.多选题- (共1题)
A.DBP中有42个原子 |
B.DBP和DEHP均由C、H、O元素组成 |
C.DBP的相对分子质量是278 |
D.DBP和DEHP中O元素质量分数相同 |
4.填空题- (共3题)
(1)地壳中含量最多的金属元素 (2)3个亚铁离子
(3)缺 易得佝偻病(4)调味品食盐的阳离子
(5)相对分子质量最小的氧化物 (6)温度计中填充的液态金属
(7)-2价的硫元素 (8)3个二氧化碳分子

(1)查阅资料发现,酒精灯加热时玻璃管的 受热温度是400~500℃,酒精喷灯加热时玻璃管的受热温度是800~1200℃。实验室要利用上图来制取金属铁,仪器甲应选用的加热仪器是(填“酒精灯”或“酒精喷灯”);装置明显存在的不足之处是 。
(2)A、B处发生的现象分别是A 、B ;
(3)为了防止溶液倒吸,本实验停止加热前是否要先断开A和B的连接处? (填“需要”或“不需要”),理由是__________________________________。
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【1】题量占比
单选题:(7道)
选择题:(6道)
多选题:(1道)
填空题:(3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:4
7星难题:0
8星难题:3
9星难题:3