【题目】回答下列问题:
(1)从鸡蛋白的溶液中提取蛋白质的方法有________和________。
(2)鸡蛋腐烂时,常闻到有刺激性气味的气体,该气体主要是________,说明蛋白质中含有________元素。
(3)误食重金属盐会中毒,这是因为_________________。
(4)浓硝酸溅到皮肤上,使皮肤呈现________色,这是由于浓硝酸和蛋白质发生了________反应的缘故。
(5)鉴定一种织物的成分是真丝还是人造丝,可各取一小块进行________,这是因为______________________。
科目:高中地理 来源: 题型:
【题目】根据汉语意思完成句子,一空一词。
【1】他想到什么就说什么,不管别人的感受。
He says what he thinks, other people’s feelings.
【2】我很难区分她们姐妹俩。
It’s hard for me to her her sister.
【3】在我们班,女生占多数。
In our class, girl students are .
【4】只要你达到这些要求,你就会被我校录取。
you meet these demands, you will be admitted into our school.
【5】老师不应该偏爱任何学生,恰恰相反,他们应该多关心落后的学生。
Teachers should never _ any student,
they should the backward ones.
查看答案和解析>>
科目:高中地理 来源: 题型:
【题目】听一段材料,回答下面几个小题。
【1】What is the relationship between the two speakers?
A. Travel agent and customer.
B. Husband and wife.
C. Boss and secretary.
【2】When will the meetings end?
A. At 3:00 pm. B. At 5:00 pm. C. At 6:30 pm.
查看答案和解析>>
科目:高中地理 来源: 题型:
【题目】A
Buildings crashed to the ground in seconds. Thousands of people lost their lives in a flash. Since they were told an earthquake would hit Tokyo around September 16, Japanese people haven’t been able to get these thoughts out of their minds.
They heard the news from Yoshio Kushida, a researcher who used radio waves to predict that an earthquake would strike with a magnitude(量级) of at least seven."It would be terrible not to warn people of a possible disaster in case a quake actually occurs, "he said.
His warning had a big effect. Frightened Tokyo people have been stocking up on water, food and candles in preparation for the terrible day.
But Kushida hasn’t had much support from the experts. At present, predicting earthquakes is thought to be impossible. No one can tell exactly where or when the next major earthquake will occur. An earthquake begins tens of miles below the earth’s surface: it’s too faraway to see.
Ancient Chinese and Italian scientists forecast earthquakes by special "earthquake clouds". They found that a week before an earthquake, there were often strange clouds — shaped like snakes, waves or feathers — in the sky. They thought the clouds might come from a gas produced underground by an earthquake.
People also used to watch animals to see if earthquakes were coming. When they saw birds fly away suddenly, dogs barking violently or fish jumping out of the water, they told people to leave the area. Some scientists believed animals had a sharper sense of changes taking place underground.
But the ancient methods were not reliable enough. Nowadays, scientists use special instruments to predict earthquakes more precisely(精确地).
Satellite systems are very useful: they record small changes in the earth’s magnetic fields(磁场) which help show where and when an earthquake may strike.
【1】Since they were told an earthquake would hit Tokyo, Japanese people__________.
A. have had no mind to do their work
B. have always thought great damage it may cause
C. have almost forgotten about it
D. have bought all the foods in the markets
【2】 Which of the following is TRUE?
A. Tokyo people were surprised at the warning.
B. Great disasters would happen if people are not warned of before an earthquake.
C. Predicting earthquakes is completely impossible at present science level.
D. According to ancient people,before an earthquake we can see strange clouds anywhere.
【3】Which is the best way to predict earthquakes nowadays?
A. Watch animals. B. By special"earthquake clouds".
C. Use satellite systems. D. There’s no way.
【4】Which can be the best title for the passage?
A. Earthquake prediction. B. Magnetic fields.
C. Earthquakes. D. An earthquake in Japan.
查看答案和解析>>
科目:高中地理 来源: 题型:
【题目】B
Montgomery County Special Olympics held its eighth yearly show of unified (联合的)basketball at Blessed Sacrament School. The gym was filled with cheerleaders (啦啦队队员), parents and friends. The walls were covered with posters made by thirdandfourthgraders at the school. And all the elementary, middle and high school unified teams were playing hard and having fun. Every basket, no matter which team scores, is cheered and celebrated.
Special Olympics support more than 20 unified games. What are unified games? They are programs designed for players with special needs. In the games, they play with kids who are volunteers, called unified partners. The special athletes are unable to play normally like other healthy kids, and some of them are wheelchair (轮椅) users. In basketball, the unified partners rebound (抢得篮板球), pass and sometimes push a special athlete’s wheelchair. As Brian Ross, a seventhgrader at St. Albans School in Washington, says, "You just try to help and get everyone to take part."
Some special athletes have come a long way to be where they are. Caleb Head is a 15yearold special athlete. When he started, Caleb would only stand at the door and watch. Then Caleb began to practice his shooting but still would not play in the games. Now Caleb runs up and down looking for his shot.
The special athletes are not the only ones who benefit (受益) from unified sports; the unified partners do, too. Marla Grusin, whose son Tyler is a special athlete, says every kid should come to a Special Olympics
Not a bad lesson for any athlete.
【1】The first paragraph is about____________.
A. the meaning of unified games
B. Special Olympics’ development
C. the benefits of playing basketball
D. an exciting unified basketball game
【2】Special Olympics are especially held for students who____________.
A. are disabled
B. love cheerleading
C. know little about ball games
D. want to become a star player
【3】 According to the text, Brian Ross is most probably____________.
A. a cheerleader B. a special athlete
C. a unified partner D. a basketball teacher
【4】According to Grusin, taking part in Special Olympics games can help children____________.
A. learn basic basketball skills
B. become more selfless
C. improve their health
D. get better grades
查看答案和解析>>
科目:高中地理 来源: 题型:
【题目】有三种物质AC2、B2C2、AD4,元素A的最高正价和负价绝对值相等;元素B的单质能在C的气态单质中剧烈燃烧,火焰呈黄色,并生成淡黄色固体B2C2;元素D的负一价阴离子的电子层结构与氩原子的相同,则:
(1)A、B、C、D的元素名称分别为 、 、 、 。
(2)AD4分子中含有的共价键类型为 (填“σ键”或“π键”)。
(3)D的负一价阴离子的电子排布式为 ,B2C2的电子式为 ,属 (填“离子化合物”或“共价化合物”)。
查看答案和解析>>
科目:高中地理 来源: 题型:
【题目】It was probably at that moment _____ I understood what kindness really was.
A. that
B. when
C. which
D. what
查看答案和解析>>
科目:高中地理 来源: 题型:
【题目】完成句子
1. They talked so much ________ ________ they ________ friends.
他们谈了很多就好像是朋友似的。
2. ________ ________, you should be honest with me.
最重要的是,你应该对我说实话。
3. He likes ________ ________ ________ others.
他喜欢开别人的玩笑。
4. We must ________ ________ the good apples from the bad ones.
我们必须把好苹果与坏苹果分开。
5. He ________ ________ ________ ________ the pool.
他把手浸入池子里。
6. Believe it or not, I don’t like _______________________he spoke to me.
信不信由你,我不喜欢他对我讲话的方式。
7. He borrowed a book the other day, _______________________ is a worker.
那天他借了一本书,书的作者是一名工人。
8. Thank you for your help, _______________________we could not have finished the work on time.
感谢你的帮助,没有你的帮助我们不可能按时完成工作。
9. Who do you suppose is the man _______________________ our teacher is talking?
你知道正在和我们老师谈话的人是谁吗?
10. The reason _______________________ I bought the roses is that Mary likes them.
我买玫瑰的原因是玛丽喜欢。
查看答案和解析>>
科目:高中地理 来源: 题型:
【题目】听一段材料,回答下面几个小题。
【1】What do we learn about Ms. Rowling's first book?
A. It was written for adults.
B. It made her famous soon.
C. It was about a kind of animal.
【2】Why does Ms. Rowling consider herself so lucky?
A. She can make a living by writing.
B. She is loved by many people.
C. She likes writing so much.
【3】Where did Ms. Rowling get the ideas for the Harry Potter books?
A. She read many books written by others.
B. She collected them from daily life.
C. She didn't know it herself.
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com