You can’t see any object unless light from that object gets into your eyes．Some of the things you see give off light of their own。The sun，the stars，a lighted lamp are the examples that can be seen by their own light．But most of the things you see are not giving off light of their own．They are just reflecting(反射)light that falls on them from the sun or some other luminous bodies．The moon，for example，doesn’t give off any light of its own．It is not 1uminous．You see it because sunlight falls on it and some of the sunlight reflects on the earth．So moonlight is only second—hand sunlight．
When you look at a book，it sends some of the light which fails on it to your eyes，and you see the book．If light could be kept out from where you’re so that there would be no light from the book to reflect．Then you couldn’t see the book even with your eyes wide open．Light travels so fast that the time in which it travels from the book you’re reading to your eyes is as short as if there were no time at time．Light reaches us from the moon，which is about 380，000 kilometres away，in only a little more than a second．You can see the book because________．
| A．your eyes are close to it | B．it reflects some of the light |
| C．it has light of its own | D．it is big enough to be seen |
The Chinese meaning of the world“luminous”is close to_______．
| A．闪光的 | B．看不见的 | C．发光的 | D．明亮的 |
________has light of its own．
| A．The moon | B．The earth | C．The sun | D．The satellite of Dong Fong Hong |
Light travels about_________kilometers per second．
| A．300，000 | B．100，000 | C．400，000 | D．190，000 |
Which of the following is TRUE?
| A．All the things you can see give off light． |
| B．Light from the book is much faster than that from the moon． |
| C．The moment you open your eyes，the light from the book travels to your eyes． |
| D．Light travels so fast that there is no time for you to read． |
Potatoes were first grown in the Andes in South America.In 1586，they were taken to Europe by explorers（探险家）.In 1719，they were taken to North America.Before 1719，nobody in North America had ever seen or eaten a potato.Today，each American eats more than 60 kilos of potatoes a year.
（1）Where were potatoes first grown？
A.In North America.
B.In Europe.
C.In the Andes in South America.
（2）Who took the potatoes in Europe？
A.Artists.
B.Explorers.
C.Doctors.
（3）When were potatoes taken to North America？
A.In 1719.
B.In 1586.
C.In 1791.
（4）How many potatoes does an American eat in one year today？
A.More than 55 kilos.
B.More than 60 kilos.
C.More than 65 kilos.
Hi，I'm Giorgio.I'm from Sicily.It's a beautiful island in Italy.I live in a village on the coast（海岸）.The sea is blue and I like to go fishing.
The capital of Italy is Rome.It is a very old city full of famous buildings.St Peter's is a very big and beautiful church（教堂） there.
Rome is very busy，but Milan is busier than Rome.It is in the north west of Italy.Do you know is famous football team？Milan has a population of 4 million people.People are busy working.
Venice is on the sea，and people use boats，not bicycles or buses for transport.Venice is beautiful，with lovely，old bridges and buildings by the water.
I'm happy on my island—and we have very good pizzas.
（1）Where is Giorgio from？
A.Italy.
B.India.
C.England.
（2）Rome is .
A.busier than Milan
B.the capital of Italy
C.famous for football
（3）Milan has a population of .
A.4 million people
B.5 million people
C.6 million people
（4）If you are in Venice，how will you go to school？
A.By boat.
B.By bus.
C.By bike.
Welcome to Tomorrow Hotel
|
Facilities 128 beds Open 24 hours，all year Car park Games room Washing machines No smoking |
Charges Under 18 ¥55 Adults ¥120 |
Meal Time Breakfast at 7：30 a.m. Dinner 5：30 p.m.﹣﹣﹣7：00 p.m. |
（1）How many people can stay at the hotel？
A.55.
B.120.
C.128.
（2）What does the underlined word "charges" mean？
A.Reasons.
B.Costs.
C.Places.
（3）When is lunch time in Tomorrow Hotel？
A.6：00 a.m.
B.7：00 p.m.
C.No lunch served
阅读下面的短文，从每题所给的A B、C三个选项中选出最佳选项回答问题或完成句子。
An international expo（ 产品博览会） on big data （数据） opened on Wednesday in southwest China's Guizhou Province，showing the newest scientific and technological creations and achievements in the relevant area，May 26，2021.
Big data （数据） is a lot of sets of information that are put together so they can be used by a computer program.The computer program looks for different kinds of answers or patterns in the data.Big data can have different kinds of information that comes from schools，social media sites，companies，and governments.One set of data can have people's names and addresses.Another set can have what they like，where they go to school，and how much time they spend on the computer.
President Xi Jinping called for China to speed up its big data strategy（成略） in order to better serve social and economic（经济） development and improve people's lives.In the past few years big data has been used more often in China.The government uses it to understand how many people travel on buses or trains.The information is then used to make bus or train systems better.
Some schools use big data to understand which children may need extra（额外的） help in class.The teacher can give certain students more help or support so those students can succeed in school.The role it plays in tourism is another example.The data travelers share online is offering the tourism industry a lot of information about the country's scenic areas（景区）.After the data is analyzed（分析），different scenic areas can create their own online information for other travelers to see.The information not only tells travelers' reviews，but also tells the scenic areas where services need to be improved.
（1）The international expo big data probably opened in .
A.Hengyang
B.Guiyang
C.Shenyang
（2）What does the underlined word "they" in Paragraph 2 refer to ？
A.Computer programs.
B.Social media sites.
C.Sets of information.
（3）Which purpose of speeding up big data strategy is NOT true according to President Xi Jinping 's opinion？
A.To better serve social and economic development.
B.To improve people's lives.
C.To protect the environment.
（4）Some schools use big data to according to Paragraph 3.
A.find out how many students travel on buses or trains
B.help students in need
C.offer students information about the scenic areas
（5）We can read the passage .
A.on a movie poster
B.In a story book
C.on a news website
阅读下面的短文，从每题所给的A、B、C三个选项中选出最佳选项回答问题或完成句子。
The traditional Chinese lunar calendar divides the year into 24 solar terms （节气）.It starts from the Beginning of Spring and ends with the Greater Cold，moving in cycles.It is still useful today to guide people's lives through special foods，cultural ceremonies and even healthy living tips.
Grain Buds（小满），the 8th solar term of a year，begins on May 21 this year，and ends on June 4.It means that the seeds （种子） from the grain are becoming full.During the Grain Buds，summer harvest is about to begin.A saying about rain during this time mentions， "A heavy rainfall makes the river full." Because of the great increase in rainfall，rivers are full of water.This is a good time to enjoy fish.It is also harvest season for fishermen.
Frost's Descent （霜降），the 18th solar term of the year，is the last solar term of autumn，during which time the weather becomes much colder than before and frost begins to appear.The apple is one kind of recommended（推荐的） fruit during Frost's Descent.There are many saying about apples' benefits（益处） in China，such as "Eat an apple after meals，even old men can be as strong as young men."
Minor Cold （小寒） is the 23rd one.For most areas of China，it marks the start of the coldest days of the year and people always start preparing for New Year.According to traditional Chinese medicine thoughts，people need to eat food that has more yang energy to prevent cold from harming their bodies.Another important traditional food for Minor Cold is Laba porridge （腊八粥）.
（1） is the last solar term of a year.
A.Minor Cold
B.Greater Cold
C.Frost's Descent
（2）How many days does Grain Buds last this year？
A.Thirteen.
B.Fifteen.
C.Seventeen.
（3）The underlined sentence "Eat an apple after meals，even old men can be as strong as young men." is closest in meaning to " ".
A.An apple a day keeps the doctor away.
B.It's more useful for old men to eat apples than young men.
C.If old men eat apples after meals，they will become younger and younger.
（4）In most areas of China，people always during Minor Cold.
①prepare for New year ②have Laba porridge
③say good﹣bye to the coldest days ④wear warmer clothes
A.①②③
B.②③④
C.①②④
（5）We can learn from the passage that .
A.it is necessary for people to take umbrellas with them during Grain Buds
B.Frost's Descent is the 8th solar term of a year
C.people need to eat food that has less yang energy during Minor Cold
