GY - GYEDU

https://gyedu.cn/.

  1. 控制面板
  2. 会员中心
  3. 在线文档

GYEDU

Index
profile-picture
编号:20250610204928123
学科题库

阅读下面短文, 从每题所给的A、B、C、D四个选项中选出最佳选项。

One August afternoon, I sat in my kitchen staring at a glass vase that hadn’t seen daylight since my wedding.

My husband and I had just sold our house and we were busy ___21___ the beloved home our family had spent 23 years filling up. We had decided on key items for the ___22___ we were moving to in town, donated what we could, and rented a place to ___23___ our supposedly important objects. That left a house still ___24___ with things that, while not particularly ___25___, didn’t belong in a landfill (垃圾填埋场).

I took a picture of the vase and posted it online, for $10. A couple of messages came in, one wanting additional ___26___, another asking for a price cut. As our ___27___ day drew near, I settled on a new price ($0) and reposted it. The ___28___: “I hate this vase. Maybe you won’t.” In an instant, a woman raced into my house and left happily with the vase.

___29___, I posted more. My daily posts and the ___30___ I received became a precious ray of light in the chaos of my house. Each exchange provided a chance to ___31___ the landfill and to please another person I might not otherwise have ___32___.

I sit in my apartment today, loving each of the ___33___ that share our small space. I take ___34___ in knowing that, somewhere nearby, someone is ___35___ something that couldn’t come with us.

21. A. painting over B. looking around C. emptying out D. pulling down

22. A. hotel B. office C. cottage D. apartment

23. A. store B. display C. sell D. repair

24. A. covered B. decorated C. stuffed D. equipped

25. A. conventional B. valuable C. complicated D. tolerable

26. A. fees B. photos C. receipts D. models

27. A. move B. pay C. market D. work

28 A. warning B. request C. description D. reply

29. A. Confused B. Interested C. Disappointed D. Encouraged

30. A. visits B. reports C. advice D. money

31. A. remove B. spare C. find D. check

32. A. investigated B. recognized C. encountered D. recommended

33. A. giveaways B. posts C. contributions D. belongings

34. A. joy B. part C. care D. time

35. A. anticipating B. appreciating C. delivering D. withdrawing

...

2025年06月10日 0 views
profile-picture
编号:20250610204911392
学科题库

阅读下面短文, 从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。

An Unsung Hero

Need a break between classes or just a quick pick-me-up in the morning? The College Cafe has just that, and more. _____16_____

Catherine Murphy, a cafe worker in a green shirt and black hat, makes sure that each customer gets exactly what they order. She goes back and forth between machines to make the drinks. _____17_____ As the customer grabs the drink from her hand, she smiles and says, “Hello, how is your day?” Even when the line is getting longer, she doesn’t let it get in the way of her genuine conversations.

Murphy gets up at a quarter to five and drives thirty minutes every day to get to work on time. _____18_____ “I do so because I like to make coffee for the students. I know they need it in the morning,” Murphy said. Being a mother and wife has helped her become the woman she is. She believes she is here to serve.

One thing Murphy may not know is that her smile is contagious (有感染力) and can be the difference in a student having a much better day than they were having before seeing her. Joanna Wright, a senior political science major, loves coffee and goes to the cafe at least six days a week. _____19_____ “Catherine always has a huge smile on her face, which always puts me in a cheerful mood,” Wright said.

“I enjoy working in the cafe,” Murphy said. _____20_____ She has every intention of staying and continuing doing what she loves.

A. The cafe closes at 9 pm every day.

B. She has two children aged eight and four.

C. Sometimes she arrives early to serve the students early.

D. After finishing an order, she calls out the name on the cup.

E. Not only does this cafe serve up drinks, it also serves up smiles.

F. Going to the cafe starts her day off good and gets her ready for class.

G. She has served here for 17 years and can’t imagine working anywhere else.

...

2025年06月10日 0 views
profile-picture
编号:20250610204847833
学科题库

Microplastics have become a common source of pollution across the Earth — they have settled in the deep sea and on the Himalayas, stuck inside volcanic rocks, filled the stomachs of seabirds and even fallen in fresh Antarctic snow. They are even appearing inside humans.

Now, new research suggests that a simple, cheap measure may significantly reduce the level of microplastics in water from your tap (水龙头): boiling and filtering (过滤) it. In a study published Wednesday in Environmental Science & Technology Letters, researchers from China found that boiling tap water for just five minutes — then filtering it after it cools — could remove at least 80 percent of its microplastics.

Crucially, this process relies on the water containing enough calcium carbonate (碳酸钙) to trap the plastics. In the study, boiling hard water containing 300 milligrams of calcium carbonate led to an almost 90 percent drop in plastics. But in samples with less than 60 milligrams of calcium carbonate, boiling reduced the level of plastics by just 25 percent. Additionally, the research didn’t include all types of plastics. The team focused only on three common types — polystyrene, polyethylene and polypropylene — and they didn’t study other chemicals previously found in water such as vinyl chloride.

Still, the findings show a potential path forward for reducing microplastic exposure — a task that’s becoming increasingly difficult. Even bottled water, scientists found earlier this year, contains 10 to 1,000 times more microplastics than originally thought.

Scientists are still trying to determine how harmful microplastics are — but what they do know has raised concerns. The new study suggests boiling tap water could be a tool to limit intake. “The way they demonstrated how microplastics were trapped through the boiling process was nice,” Caroline Gauchotte-Lindsay, an environmental engineer of the University of Glasgow in Scotland who was not involved in the research, tells New Scientist. “We should be looking into upgrading drinking water treatment plants so they remove microplastics.”

12. How does the author present the issue in the first paragraph?

A. By quoting an expert. B. By defining a concept.

C. By giving examples. D. By providing statistics.

13. What determines the effectiveness of trapping microplastics in water?

A The hardness of water. B. The length of cooling time.

C. The frequency of filtering. D. The type of plastic in water.

14. What does the author try to illustrate by mentioning bottled water in paragraph 4?

A. The importance of plastic recycling. B. The severity of the microplastic problem.

C. The danger in overusing pure water. D. The difficulty in treating polluted water.

15. What is Gauchotte-Lindsay’s suggestion about?

A. Choice of new research methods. B. Possible direction for further study.

C. Need to involve more researchers. D. Potential application of the findings.

...

2025年06月10日 0 views
profile-picture
编号:20250610204743521
学科题库

While safety improvements might have been made to our streets in recent years, transport studies also show declines in pedestrian (行人) mobility, especially among young children. Many parents say there’s too much traffic on the roads for their children to walk safely to school, so they pack them into the car instead.

Dutch authors Thalia Verkade and Marco te Brömmelstroet are bothered by facts like these. In their new book Movement: How to Take Back Our Streets and Transform Our Lives, they call for a rethink of our streets and the role they play in our lives.

Life on city streets started to change decades ago. Whole neighbourhoods were destroyed to make way for new road networks and kids had to play elsewhere. Some communities fought back. Most famously, a Canadian journalist who had moved her family to Manhattan in the early 1950s led a campaign to stop the destruction of her local park. Describing her alarm at its proposed replacement with an expressway, Jane Jacobs called on her mayor (市长) to champion “New York as a decent place to live, and not just rush through.” Similar campaigns occurred in Australia in the late 1960s and 1970s as well.

Although these campaigns were widespread, the reality is that the majority of the western cities were completely redesigned around the needs of the motor car. The number of cars on roads has been increasing rapidly. In Australia we now have over twenty million cars for just over twenty-six million people, among the highest rate of car ownership in the world.

We invest a lot in roads that help us rush through, but we fail to account for the true costs. Do we really recognise what it costs us as a society when children can’t move safely around our communities? The authors of Movement have it right: it’s time to think differently about that street outside your front door.

8. What phenomenon does the author point out in paragraph 1?

A. Cars often get stuck on the road. B. Traffic accidents occur frequently.

C. People walk less and drive more. D. Pedestrians fail to follow the rules.

9. What were the Canadian journalist and other campaigners trying to do?

A. Keep their cities livable. B. Promote cultural diversity.

C. Help the needy families. D. Make expressways accessible.

10. What can be inferred about the campaigns in Australia in the late 1960s and 1970s?

A. They boosted the sales of cars. B. They turned out largely ineffective.

C. They won government support. D. They advocated building new parks.

11. What can be a suitable title for the text?

A. Why the Rush? B. What’s Next?

C. Where to Stay? D. Who to Blame?

...

2025年06月10日 0 views
profile-picture
编号:20250610204722764
学科题库

In my ninth-grade writing class last year, I met a cowboy who saved his town, a strict father who demanded his son earn straight A’s, and a modern-day Juliet who died of heartbreak after her parents rejected the love of her young life. More than once, I found myself wondering just how my students, who’d created these people, knew their subjects so well.

But things were different for their first essay, which was about the question: “Why is writing important?” Most of the essays filled less than one page, and few contained a sentence that could be interpreted as a thesis (论点) statement. I was shocked. Then I realized that the problem was the question itself. They could have written pages on the necessity of computers, but writing, in and of itself, simply didn’t strike them as important. This would have to change.

As a new unit started, I asked everyone to write a persuasive piece on a health-related topic of their choice. This time they found the exercise much more interesting. For the next two assignments, a personal-narrative unit followed by a creative-writing workshop, I only required that the piece meet the specifications of its genre (体裁) and that it contain a thesis. The results were staggering. The students took on diverse topics and turned in stories, 10 to 20 pages each, with characters that broadened my view and touched my heart.

I walked into class believing that writing is important as a means of communication. However, my students demonstrated something more important to me. When the final bell rang in June, I walked away with a yearbook full of messages about writing’s most powerful significance — the ability to connect people, to put us in another’s skin, to teach us what it means to be human.

4 Who are the people mentioned at the beginning of paragraph 1?

A. Ninth graders. B. Students’ parents.

C. Modern writers. D. Fictional characters.

5. Why did the students perform poorly in writing their first essay?

A. They were not given enough time. B. They had a very limited vocabulary.

C. They misunderstood the question. D. They had little interest in the topic.

6. What does the underlined word “staggering” in paragraph 3 mean?

A. Mixed. B. Amazing. C. Similar. D. Disturbing.

7. What does the author’s experience show?

A. Teaching is learning. B. Still waters run deep.

C. Knowledge is power. D. Practice makes perfect.

...

2025年06月10日 0 views
profile-picture
编号:20250610204633396
学科题库

The greening of planes, trains and automobiles

Moving goods and people around the world is responsible for a large part of global CO2 emissions (排放). As the world races to decarbonize everything, it faces particular problems with transportation — which accounts for about a quarter of our energy-related greenhouse gas emissions. Here’s the breakdown of the emissions in 2018 for different modes of transport.

 

The fuels for transport need to be not just green, cheap and powerful, but also lightweight and safe enough to be carried around. Each mode of transport has its specific fuel needs. Much is still to be settled, but here are some of the solutions to get us going green.

PLANES — Synthetic hydrocarbons

The hardest sector to decarbonize is aviation. One long-term option for sustainable fuel for planes is to make hydrocarbons from recycled air.

CARS — Batteries

Batteries are energy-efficient and electric cars can plug into existing systems and services. New solid-state batteries will take a car farther on a single charge.

 

TRAINS — Electricity

Some trains are already electrified through rails or wires; others can be made electric in pretty simple ways.

TRUCKS — Hydrogen

fuel cells

Hydrogen fuel cells are a lighter choice than batteries for trucks, but making green hydrogen is expensive.

SHIPS — Liquid ammonia

Liquid ammonia is easy to keep and transport, but it is hard to ignite (点燃) and requires an engine redesign.

This energy transition (变革) is global, and the amount of renewable energy the world will need is “a little bit mind-blowing,” says mechanical engineer Keith Wipke at the National Renewable Energy Laboratory. It’s estimated that the global demand for electricity could more than double by 2050. Fortunately, analyses suggest that renewables are up to the task. “We need to speed up the development of green energy, and it will all get used,” says Wipke.

1. What percentage of global transport emissions did road vehicles account for in 2018?

A. 11.6%. B. 45.1%. C. 74.5%. D. 86.1%.

2. Which mode of transport can go green comparatively easily?

A. Planes. B. Trucks. C. Trains. D. Ships.

3. What does Wipke suggest regarding energy transition?

A. Limiting fuel consumption. B. Putting more effort into renewables.

C. Improving energy efficiency. D. Making electricity more affordable.

...

2025年06月10日 0 views
profile-picture
编号:20250610193632128
学科题库

（20-21高一下·吉林长春·期末）如图所示，竖直放置的半圆形光滑绝缘轨道半径为R=0.2 m，圆心为O，下端与绝缘水平轨道在B点相切并平滑连接。一带正电、质量为的物块（可视为质点），置于水平轨道上的A点。已知A、B两点间的距离为L=1.0 m，物块与水平轨道间的动摩擦因数为μ=0.2，重力加速度为g=10 m/s2。

（1）若物块在A点以初速度向左运动，恰好能到达圆周的最高点D，则物块的初速度应为多大？

（2）若整个装置处于方向水平向左、场强大小为的匀强电场中（图中未画出），现将物块从A点由静止释放，求物块在以后运动过程中的最大动能；

（3）在（2）问的情景中，试求物块在水平面上运动的总路程。

 

...

2025年06月10日 0 views
profile-picture
编号:20250610193609234
学科题库

（21-22高二上·辽宁营口·开学考试）如图所示，真空中虚线左侧有一电场强度大小方向水平向左的匀强电场，在两条平行的虚线和之间存在着宽为，电场强度大小、方向竖直向下的匀强电场，在虚线右侧距为处有一竖直固定的屏，现将一电子从左侧的A点无初速度释放，最后打在右侧的屏上。A点到的距离为d，A、O连线与屏垂直，垂足为O，电子的质量为m、电荷量为e，不计电子受到的重力，求：

（1）电子运动到时的速度大小v；

（2）电子从释放至打到屏上所用的时间t；

（3）电子打到屏上的点到O点的距离y。

 

...

2025年06月10日 0 views
profile-picture
编号:20250610193548757
学科题库

（19-20高三·全国·课后作业）如图所示，一内壁光滑的绝缘圆管固定在竖直平面内圆管的圆心为O，D点为圆管的最低点，A、B两点在同一水平线上，，圆管的半径为（自身的管径忽略不计）。过的虚线与过的虚线垂直相交于C点，在虚线的上方存在方向水平向右、范围足够大的匀强电场；虚线的下方存在方向竖直向下、范围足够大的匀强电场，电场强度大小都为E。圆心O正上方的P点有一质量为m、电荷量为的小球（可视为质点），长为L。现将该小球从P点无初速度释放，经过一段时间后，小球刚好从管口A无碰撞地进入圆管内，并继续运动重力加速度为g。

(1)求小球从P到A运动的时间；

(2)求小球在管中运动经过D点时对管的压力的大小；

(3)小球从B点离开后，经过一段时间到达虚线上的N点（图中未标出），求小球从A到N的总时间以及N点距离B点的距离x。

 

...

2025年06月10日 0 views
profile-picture
编号:20250610193530549
学科题库

（15-16高二上·河北邯郸·阶段练习）有一个用直流电动机提升重物的装置，重物的质量m=50 kg，电路电压为120 V，当电动机以v=0.9 m/s的恒定速度向上提升重物时，电路中的电流I=5 A，求：

（1）电动机线圈的电阻R等于多少。

（2）电动机对该重物的最大提升速度是多少。

（3）若因故障电动机不能转动，这时通过电动机的电流是多大，电动机消耗的电功率又为多大。（g取10 m/s2）

...

2025年06月10日 0 views

GYEDU | 网站免责声明
为了浏览本网站(GYEDU,以下简称本网站)，访问者应当关注、理解并接受本站作出的下述免责声明：

1、本网站所提供的信息，只供教育教学参考之用。

2、本网站及其会员一概毋须以任何方式就任何信息传递或传送的失误、不准确或错误对用户或任何其他人士负任何直接或间接的责任。

3、在法律允许的范围内，本网站在此声明,不承担用户或任何人士就使用或未能使用本网站所提供的信息或任何链接或项目所引致的任何直接、间接、附带、从属、特殊、惩罚性或惩戒性的损害赔偿。

4、访问者在从事与本网站相关的所有行为(包括但不限于访问浏览、利用、转载、宣传介绍)时，必须以善意且谨慎的态度行事；访问者不得故意或者过失的损害本网站的各类合法权益，不得利用本网站以任何方式直接或者间接的从事违反中华人民共和国法律、国际公约以及社会公德的行为。对于访问者利用本网站提供的信息而作出的任何决策、决定以及其后果，本网站不承担任何责任

5、本网站图片，文字之类版权，本网站无法鉴别所上传图片或文字的知识版权，如果侵犯，请及时通知我们，本网站将在第一时间及时删除。

6、凡以任何方式登录本网站或直接、间接使用本网站资料者，视为自愿接受本网站声明的约束。

GYEDU   

GYEDU | 网站导航
  • 566 学科题库
  • 58 学科教案
  • 5 学科课件
  • 2 个人收藏
    • GYEDU | 广告位
    数据来源: 西部数码
    出售价格: 接受议价