C和
C
C . CH4和C2H6
D .
和 Taking notes is very important in high school. If you don't take notes, you may find it difficult to go over the lessons. You need to get some skills in order to take perfect notes. Here are some tips to help you.
Try not to overdo it. Some students like writing down every word. If you want to write down every word, you may miss the most important points. Some people learn well by listening carefully, writing down a few key points, and then going over the material after class when they have more time. So just make sure that you've written down the most important points.
Ask your teacher to repeat something. If you've missed something or the teacher is going too fast, you can raise your hand and ask your teacher to repeat it. Chances are if you missed something, one of your classmates might have missed too. So there's nothing wrong with asking for something to be repeated.
Reviewing or recopying your notes when you get home can help you remember what you have learnt during the day. Do the notes you've taken match up with (匹配) your textbook? You can also compare your notes with a friend. This helps you remember the most important points and can help when preparing for a test or an exam.
Review your notes from time to time. If you don't review your notes, you may forget what you have learned. But if you review your notes regularly, you'll remember well what you've learned. This can help you a lot when you have to take a test or an exam.
A.This is not a good idea.
B.It is helpful to some students.
C.Don't forget to review your notes.
D.Review your notes on the same day.
E.However,not everyone knows how to take notes.
F.You don't have to stay up late to go over your notes.
G.Some students are afraid of stopping a teacher in class.
北宋的司马光、王安石和苏轼,既是重要的政治人物,也是成就极高的学者或诗人。
司马光与王安石政见分歧很大。宋神宗重用主张变法的王安石,反对变法的司马光失去宰相位置。后来王安石变法受挫,王安石被免职,司马光重新为相。
但他们对对方的评价却让我们看到了更多的东西。王安石说,他和司马光之间“议事每不合”,“所操之术多异故也”;司马光说,“介甫文章节义,过人处甚多”,“光与介甫,趣向虽殊,大归则同”。
苏轼也是王安石变法的激烈反对者,这极大影响了苏轼的政治命运。而在“乌台诗案”时,王安石上书说“安有圣世而杀才士乎?”被贬黄州四年后,苏轼路过江宁拜访早巳退居的王安石。二人相聚甚欢,同游数日,共览江山胜迹,尽论文章学术。
班上计划举行班会,围绕上述材料展开讨论。读了上述材料,你感触最深的是什么?请结合你的感受和思考写一篇发言稿。
要求:结合材料,选好角度,确定立意,明确文体,自拟标题,不要套作,不得抄袭,得泄露个人信息,不少于800字。
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:在错的词下面划一横线,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1词;
2)只允许修改10处,多者(从第11处起)不计分。
My dream school starts at 8:30 am and ends at 3:30 pm. They are three lessons in the morning and two in the afternoon. We didn't need to do so many homework. Therefore, we have more time with after-school activities. For example, we can do reading for one and a half hour and take exercise for one hour every day.
My dream school look like a big garden. There are all kinds of the flowers and trees around the classroom buildings. We can lie on the grass for a rest or sitting by the lake listening music. The teachers here are kind and helpfully. They are not only our teachers but also our friends.
—Ten, two children________.
In her new book, “The Smartest Kids in the World,” Amanda Ripley, an investigative journalist, tells the story of Tom, a high-school student from Gettysburg, Pennsylvania, who decides to spend his senior year in Warsaw, Poland. Poland is a surprising educational success story: in the past decade, the country raised students' test scores from significantly below average to well above it. Polish kids have now outscored(超过……分数) American kids in math and science, even though Poland spends, on average, less than half as much per student as the United States does. One of the most striking differences between the high school Tom attended in Gettysburg and the one he ends up at in Warsaw is that the latter has no football team, or, for that matter, teams of any kind.
That American high schools waste more time and money on sports than on math is an old complaint. This is not a matter of how any given student who plays sports does in school, but of the culture and its priorities. This December, when the latest Program for International Student Assessment (PISA) results are announced, it's safe to predict that American high-school students will once again display their limited skills in math and reading, outscored not just by students in Poland but also by students in places like South Korea, Belgium, the Netherlands, Finland, Singapore, and Japan. Meanwhile, they will have played some very exciting football games, which will have been breathlessly written up in their hometown papers.
Why does this situation continue? Well, for one thing, kids like it. And for another, according to Ripley, parents seem to like the arrangement, too. She describes a tour she took of a school in Washington D.C., which costs thirty thousand dollars a year. The tour leader—a mother with three children in the school—was asked about the school's flaws(瑕疵). When she said that the math program was weak, none of the parents taking the tour reacted. When she said that the football program was weak, the parents suddenly became concerned. “Really?” one of them asked worriedly, “What do you mean?”
One of the ironies(讽刺) of the situation is that sports reveal what is possible. American kids' performance on the field shows just how well they can do when expectations are high. It's too bad that their test scores show the same thing.
Thanksgiving Day is the time when the harvest is in and it is also the perfect time for the families to get together, give thanks and enjoy the Thanksgiving celebrations. People celebrate this festival with turkeys, Thanksgiving prayers, Thanksgiving dinners, footballs and pumpkins. All these and many other things are believed to be connected with Thanksgiving celebrations. One of such things is special chocolate candies, which simply add fun and taste on this day.
Thanksgiving candies are one of the different flavors(风味)of this day. The families love to have fun on this day by sharing time together with traditional chocolate Thanksgiving candies. These chocolate Thanksgiving candies could be prepared at home and also made with white chocolate, dark chocolate or milk chocolate. Some of the popular shapes and designs of the Thanksgiving candies are turkeys, pumpkins, Indian corn, maple leaves and other autumn leaves.
The candy boxes are made of milk, white, dark or colored chocolate. They could be filled with seasonal chocolates and then stretch wrapped. Funny half-dipped cashews(腰果)and nuts may be added to these candies for making them more tasteful. However, the pops are stretch wrapped and come with curling ribbon(丝带)and are made in milk chocolate, dark chocolate, white chocolate or colors.
This time makes it a special Thanksgiving, with mouthwatering Thanksgiving candies, which is a little different and memorable. You can also take a fine collection of handmade candies, candy boxes, pops, Thanksgiving novelties(新奇)and chocolate gifts for the host of your Thanksgiving dinner. These candies are well liked by the children as well as the adults, so this could be a wonderful gift for the families.
I was desperately nervous about becoming car-free. But eight months ago our car was hit by a passing vehicle and it was destroyed. "No problem, "I thought. "We'll buy another. "But the insurance payout didn't even begin to cover the costs of buying a new car—I worked out that, with the loan(贷款) we'd need plus petrol, insurance, parking permits and tax, we would make a payment as much as £600 a month.
And that's when I had my fancy idea. Why not just give up having a car at all? I live in London. We have a railway station behind our house, a tube station 10 minutes' walk away, and a bus stop at the end of the street. A new car club had just opened in our area, and one of its shiny little red Peugeots was parked nearby. If any family in Britain could live without a car, I reasoned, then surely we were that family.
But my new car-free idea, sadly, wasn't shared by my family. My teenage daughters were horrified. What would their friends think about our family being "too poor to afford a car"? (I wasn't that bothered by what they thought, and I suggested the girls should take the same approach. )
My friends, too, were astonished at our plan. What would happen if someone got seriously ill overnight and needed to go to hospital?(an ambulance)How would the children get to and from their many events?(buses and trains)People smiled as though this was another of my mad ideas, before saying they were sure I'd soon realize that a car was a necessity.
Eight months on, I wonder whether we'll ever own a car again. The idea that you "have to" own a car, especially if you live in a city, is all in the mind. I live—and many other citizens do too—in a place that has never been better served by public transport, and yet car ownership has never been higher. We worry about rising car costs, but we'd be better off asking something much more basic: do I really need a car? Certainly the answer is no, and I'm a lot richer because I dared to ask the question.
B . 在Na2O2和CaCl2中均含有共价键和离子键
C . 结构示意图为
的阴离子都不能破坏水的电离平衡
D . 电子式
可以表示羟基,也可以表示氢氧根离子