Early people didn’t need to know the exact time of day. They slept when it was dark and worked when it was light.
33,000—28,000 B.C.
People notice that changes in the weather (the seasons) are connected to changes in the sun, moon, and stars.
8,000 B.C.
Chinese, the Maya, and Sumerians develop calendars based on the cycles of the sun (a year) and the moon (a month). Most people are farmers. Calendars tell them when to plant crops and when their animals will have babies.
1,500 B.C.
People in Egypt and Sumer develop some of the first water clocks. Unlike sundials, water clocks measure time even when it’s cloudy.
1370—1410
European cities build towers with mechanical clocks inside. Every hour, a bell is rung for all to hear.
1850
Most Americans now have clocks at home. Trains keep exact schedules. Railroad workers carry pocket watches that don’t gain or lose more than 30 seconds in a week.
1955
An atomic clock is built in England. It measures oscillations(颤动) of light from cesium atoms. The light oscillates even faster than quartz crystals. Atomic clocks are the most accurate clocks yet.
Today
People rely on the Internet and cell-phone networks, which need super precise timing. Atomic clocks keep getting better.
1. How can ancient Chinese tell when to plant crops?A.By using calendars. | B.By observing the cycles of the sun. |
C.By watching the animals. | D.By predicting the weather changes. |
A.Chinese. | B.Americans. | C.Europeans. | D.Egyptians. |
A.Chinese calendars. | B.Water clocks. | C.Mechanical clocks. | D.Atomic clocks. |
相似题推荐
【推荐1】The Renaissance(文艺复兴)is generally considered to have started in Florence, Italy around the years 1350 to 1400. The start of the Renaissance also was the end of the Middle Ages.
Humanism
In the Middle Ages people thought that life was nothing but hard work and war. However, around the 1300s, the people in Florence , Italy started to think that people should be educated and that things like art, music, and science could make life better for everyone.
Florence, Italy
At the start of the Renaissance, Italy was divided up into a number of powerful city-states. One of the major city-states was Florence.
In the late 1300s, Florence had become a rich city. Wealthy businessmen had the money to hire artisans (工匠). This inspired competitions among artists and thinkers. Art began to flourish (繁荣)and new thoughts began to appear.
Petrarch and Humanism
Francesco Petrarch is often called the “Father of Humanism”. He studied poets and philosophers from Ancient Rome such as Cicero and Virgil. His ideas and poetry became an inspiration to many writers and poets throughout all of Europe as the Renaissance spread.
Giotto di Bondone
Giotto was a painter in Florence, Italy. He was the first painter to break away from the standard Byzantine style painting of the Middle Ages and try something new. Giotto is said to have started the Renaissance in art with his new style of realistic painting.
Dante
Another major contributor to the start of the Renaissance was Dante Alighieri. He lived in Florence and wrote the Divine Comedy in the early 1300s. This book is considered to be the greatest literary work ever written in the Italian language.
New Ideas Spread
This new way of thinking and style of art quickly spread to other wealthy Italian city-states. This early part of the Renaissance is often called the Italian Renaissance. Italy would become wealthy through trade and their new ideas soon spread throughout all of Europe.
1. In the Middle Ages people thought that _________ .A.life was really hard |
B.life could be enjoyable |
C.they could be educated |
D.they should live differently |
A.Francesco Petrarch |
B.Giotto di Bondone |
C.Dante Alighieri |
D.Cicero |
A.What does the Renaissance mean ? |
B.How did the Renaissance begin? |
C.The artists in the Renaissance |
D.Literature in the Renaissance |
A.a book review |
B.a history paper |
C.a newspaper advertisement |
D.a travel magazine |
【推荐2】In the early 19th century, Egypt connected two vast regions: the Ottoman Empire (奥斯曼帝国) and the African continent. For centuries, the Ottoman Empire had been at the center of Eurasian trade. It had also been a major center of manufacturing which produced handmade goods for Europe and Africa.
However, the industrialization of Europe meant that cheaper goods made by machines soon flooded into the Ottoman Empire. The result of this competition was that Africa was increasingly seen as a place that provided new materials for European factories, rather than one that had factories of its own.
Egypt was an African country that was technically part of the Ottoman Empire. It was first invaded by the French army. With British help, the Ottoman forces drove the French out of Egypt. Following this, Muhammad Ali successfully brought about Egyptian independence from the Ottoman Empire. By 1831, he was effectively an independent ruler of a more modern Egypt.
Egypt was already a small-scale producer of cotton, which was sold to Britain. Ali encouraged even more cotton production nationwide. With the money from this cotton production, Ali’s government began to aid factories so that the country could profit from its own industrialization. By the late 1840s, it looked like Egypt would eventually become an industrial power.
During the following years, Egypt’s economy stagnated and slowly slid into decline. The factories ceased production, and by the 1880s, it had to seek help from Britain financially. Though Egypt remained formally independent, it seemed to be more like a British colony.
Europeans kept interfering in Egypt partly because of the Suez Canal. Egypt’s new leaders were already stressful because of the industrial collapse that left their country unable to repay the money borrowed from Britain. Finally, in 1875, the king sold his share in the Suez Canal Company to the British, giving them control of this important national resource. The powerful British took advantage of this instability and seized the country.
1. For Africa, what was the result of the industrialization of Europe?A.The new factories began to spring up in Africa. |
B.The prices of the goods became higher in Africa. |
C.Africa was reduced to material suppliers gradually. |
D.Handmade goods became popular in Europe and Africa. |
A.recovered | B.bounced | C.ruined | D.stopped |
① French invaded Egypt. ② The Ottoman Empire ruled Egypt.
③ Britain seized Egypt. ④ Egypt gained independence.
A.①③②④ | B.①②④③ | C.②①③④ | D.②①④③ |
A.The Suez Canal was the main contributing cause of all disputes. |
B.Egypt enjoyed booming development and underwent social unrest. |
C.Egyptians were so brave as not to obey the rulers of other countries. |
D.Egypt lived up to the status—one of the Great Ancient Civilizations. |
【推荐3】There are a number of special days of the year that are celebrated in different countries. The origins of most of the days are unknown. They were certainly not created by individual people. Other days, however, especially those celebrated in western countries often owe their origins to a particular person. One of the most popular of these, even though it is fairly recent, is Mother’s Day. Mothers have always been highly regarded in all cultures. The ancient Romans had a festival known as Hilaria, during which children took presents to the temple of the “Mother of the Gods”. The Christian Church adopted this idea and called it Mothering Sunday. However, over the years this custom was gradually forgotten, and almost disappeared by the end of the 19th century.
Born in 1864 in Virginia, US, Anna Jarvis was a school teacher and believed children should show gratitude to their mothers for all their love and care. Encouraged by a friend, she wrote to thousands of important people — politicians, churchmen, doctors, city officials and asked them to support her idea: a special day of the year for thanking mothers.
In 1910 the Governor of Western Virginia introduced Mother’s Day in the state. The date chosen was May 10 — the second Sunday in May, which is still observed in America today. This date was chosen because May 10 was the date on which in 1908 Anna Jarvis’s mother died. In 1914 President Woodrow Wilson made May 10 the official date for Mother’s Day throughout the United States.
Soon there was a Mother’s Day International Association and the custom began to be adopted in many countries of the world.
Anna Jarvis, a sad and disillusioned woman died in 1948. The custom she had worked so hard to establish and which had become almost universal had lost its original purpose. It had been taken over by business. As with Christmas, the giving of presents and the sending of cards had become a multimillion dollar industry.
1. The passage mainly tells us________.A.how Mother’s Day came into being | B.how people celebrate Mother’s Day |
C.a woman named Anna Jarvis | D.President Wilson and Anna Jarvis |
A.Asia | B.America | C.Ancient Rome | D.the Christian Church |
A.her students had nothing to do |
B.she wanted to know important people in this way |
C.she wanted to do something for mothers |
D.she wanted people to thank their mothers |
A.May 10 was the date on which Anna Jarvis’s mother died | B.it was the second Sunday in May in 1910 |
C.May 10 is a lucky day | D.President Wilson like the date |
A.watched | B.followed | C.ruled | D.set |
1. Admission and School Policies The enrollment(注册) of a pupil to the School is subject to the School’ s Admission and Entry policies and other policies and procedures revised by the School from time to time. | 4. Fees School Fees are listed on the Fee Schedule and vary from time to time. A full term’s tuition must be paid for any term during which the pupil is in attendance regardless of the number of days attended. If tuition fees have not been paid, the Refundable Deposit shall be used to pay the tuition fees and the parents/guardians remain responsible for the rest. The School reserves the right to exclude(开除) a pupil if tuition or other fees are not paid in full by the due date. |
2. Withdrawal by Parent/Guardian If a parent/guardian desires to withdraw a child for any reason from the school, that parent/ guardian shall give a minimum of six weeks written withdrawal notice to the School. Notice received during a school holiday will be considered to have been received on the first day of the following term. | |
3. Refundable Deposit(押金) When a pupil is offered a place the parent/ guardian shall immediately pay the required Refundable Deposit. This is to secure enrollment at the School until the termly or annual fees have been paid. The Refundable Deposit is refundable, and shall be without interest and without taking into account changes in exchange rates. | 5. Termination by the school The school may terminate(终止) this agreement when permanent exclusion or removal is required. The School shall not take such action without good cause and full consultation with parents/ guardians and the pupil. Parents/ guardians have the right to appeal on a decision to permanently exclude a pupil. |
1. How long in advance should a written withdrawal notice be given?
A.A whole holiday. | B.At least six weeks. |
C.A whole term. | D.At least one day. |
A.They must be fully paid. |
B.They stay the same every year. |
C.They vary with the number of days attended. |
D.They can’t be paid with the refundable deposit. |
A.Study Tips. | B.Application Procedures. |
C.Terms and Conditions. | D.Frequently Asked Questions. |
【推荐2】The tech trends in this year’s product launches are to improve your quality of life, or to boost up your pride. But the more practical gadgets will improve health and wellness, or life experiences, while still keeping things cool.
Roam Portable Speaker
Size matters, but the new speaker truly denies the limitations of a tiny speaker. The Roam is a lightweight, outdoor-friendly home speaker. Its 10-hour battery life helps it work for you every day, in and out of the home. And its built-in auto- tuning feature will adjust the sound based on where you are. Being dust-and-water-resistant, Roam is likely the coolest adventure-friendly speaker on the market now.
Studio Buds
Cancel all that noise with Studio Buds. Their Active Noise Canceling mode continuously detects and blocks out any unwanted wavelength harmful to your delicate eardrums. Audio-wise, Studio Buds treat your ears to the right amount of loudness. Another bonus comes from their upto-24-hours of playback and a five- minute fast fuel charging.
OM 5 Smartphone Gimbal Stabilizer (万向支架)
Selfie-stick is nothing dead when vlogging is spreading out of control. OM 5 is its new portable smart gimbal stabilizer. For starters, it simply does not shake at all and its Active Track 4.0 formula is able to precisely track moving objects in the frame for a high-resolution focus.
STORIES Smart Glasses
While this is no VR set, the smart glasses bring a lot to the table. They have a camera for recording first- person- perspective content in HD, a single-touch pad for controlling music and the camera, and near-ear speakers so you can leave your headphones or smartphone in pocket while answering a call.
1. What is the feature of Studio Buds?A.They have a 10-hour long battery life. | B.Their mode is friendly to users’ hearing. |
C.They function well exposed to water. | D.Their holders are stable and flexible. |
A.They can be connected to a VR set. | B.They can be used to decorate a table. |
C.They can help users answer a call. | D.They can replace a single- touch pad. |
A.Studio Buds. | B.Roam Portable Speaker. |
C.STORIES Smart Glasses. | D.OM 5 Smartphone Gimbal Stabilizer. |
【推荐3】Mosquitos (蚊子)can cause us serious diseases. Until now. we've used different things to keep them away. But none of these ways actually protect us for more than 20 minutes! Now there is a new way to keep mosquitos away from you ever again without using any chemicals at all.
What is it all about?
It's called the Mosquitron—a new mosquito catcher or killer. It's very easy to control and it can protect your home from all the mosquitos!
How does it work?
Instead of trying to keep the mosquitos away, it attracts them, then catches them and finally kills them! Basically, it will attract the mosquitos into the Mosquitron, with a completely harmless UV-PT producing light. Next to the UV-PT light is a powerful reverse (反 向的)fan that sucks (吸)the mosquitos through a one-way trapdoor. Once they are trapped in the drying basket« they are dried to death by the fan in 2 minutes.
How much does it cost?
You'd be surprised to find that you can get it right now for just $89. It might seem expensive at first. However, when you compare it with other products which need regular, expensive repair and don't work for more than 10 minutes, it is pretty cheap. In fact, some products using the same UV technology are priced over $250! to buy a mosquitron?
That's very easy. You can only buy it from the supplier's website.
1. Why should we stay away from mosquitos?
A.They produce much noise. | B.They can spread serious diseases. |
C.They need a safe environment. | D.They can make dangerous chemicals. |
A.By watering them in a basket | B.By burying them with hot sand. |
C.By attracting and killing them. | D.By giving off strong and harmful light. |
A.In a computer store. | B.In a supermarket. |
C.In a restaurant. | D.On the website. |