What is colour? Why do some of the things around us look red, some green, others blue?
Colours are really made by reflected (反射) light. We see colour because most of the things reflect light. Something is red, for it reflects most of the red light. In the same way, if something is green, it reflects most of the green light. If something reflects all light, it is white. If it doesn’t reflect any light, it is black.
Some of the light is reflected and some is taken in (吸收) and turned into heat. The darker the colour is, the less light is reflected, the more light is taken in. So dark-coloured clothes are warmer in the sun than light-coloured clothes.When something reflects light, we can _______ .
A.see its colour | B.see its heat |
C.not see its colour | D.see nothing |
The dark-coloured clothes are warm because _________ is taken in.
A.more light | B.less light |
C.more colour | D.less colour |
In summer ________ make people feel cool.
A.dark-coloured clothes |
B.red-coloured clothes |
C.green-coloured clothes |
D.light-coloured clothes |
Right in the middle of the town are some long ponds(水池). They are only about half a foot deep. The men of Symi dug out the earth to make the ponds.
Over each pond is a low cover. It is made of glass that you can see through.
At night, sea water is taken into the ponds. The next day, the hot sun shines through the covers. The sun light turns the water into vapor(水蒸气) and the vapor goes up from the ponds. The salt is left behind.
As it goes, the vapor became mist. On the inside of each cover, the little drops of mist run together to make big drops. These drops run down the sides of the cover, filling other ponds with fresh water.
The salt left in the ponds is washed out each night. Then more sea water is taken in. The factory is ready for the next day’s work. The covers and other parts of the factory cost very little. Sea water and sun cost nothing. Most people of Symi are poor. So to them this new way of getting fresh water seems wonderful. Where are the little drops made into big drops?
A.On the inside of the covers. |
B.In the ponds with fresh water. |
C.On the walls of the salt water ponds. |
D.Between the fresh water and the salt water. |
The men of Symi dug some long ponds .
A.in order to keep sea water |
B.in order to get hot water inside |
C.in order to fill them with fresh |
D.in order to get fresh water |
Which picture shows the right way to get fresh water in Symi?
Which of the following is NOT true?
A.The sea water is taken into the ponds at night every day. |
B.There is a very big river running through the town to the sea. |
C.The people in Symi can get fresh water from the factory. |
D.People may see the water in the ponds through the cover. |
The Best Shopping In Sydney
Sydney is one of the world’s biggest cities and has something for everyone when it comes to shopping. You will find excellent Australian products alongside the best that the world has to offer. At the bottom of Sydney Tower, you can shop in 160 of Sydney’s favorite stores including 16 jewelry stores and many gift and fashion shops. It’s all at Westfield Centerpoint.
Tel: 9231-9300
SOVEREIGN HILL
This prize-winning living museum is where Australia’s history comes alive! Visit daily or stay for the night and experience life of the Fold Rush days. A wonderful nightly sound and light show, Blood on the Southern Cross, tells the story of the famous Eureka Uprising. Enjoy shopping along with real life character and entertainment. 4-star hotel and breakfast.
Tel: 5331-1944
ANCHORAGE RESTAURANT
Come and enjoy our delicious Cantonese seafood right on the water’s edge in the historic fishing port of Williamstown with views of the city center across Port Phillip Bay. Open 7 days a week.
Lunch: Sunday to Friday11:00am—2:00pm
Dinner: Monday to Saturday 5:00am—10:30pm
Tel: 9397-6270 or 9397-7799
COOK’S COTTAGE
Built by James and Grace Cook, parents of Captain James Cook, Cook’s Cottage stands proud in the Fitzroy Gradens as a reminder of life in the eighteenth century, and as a celebration and commemoration of the life and travels of Captain James Cook.
Open 9:00am—5:00pm daily, and until 5:30 pm during the summer.
Information: 9419-4677Where can you spend the night in a tour?
A.Cook’s cottage. | B.Westfield Centerpoint |
C.Sydney Tower | D.Sovereign Hill |
What is the time that Cook’s Cottage is open on Saturday in the summer?
A.11:00 am—2:00 pm | B.5:00 pm—10:30 pm |
C.9:00 am—5:30 pm | D.9:00 am—5:00 pm |
If you want to buy the best products in Australia, you may call.
A.9397-6270 | B.9231-9300 | C.5331-1944 | D.94194677 |
Weather has a strong effect(影响) on people. It influences health, intelligence (智力) and feelings. In August, it is very hot and wet in the southern part of the United States. People there easily have heart trouble and other kinds of health problems during this month. In the Northeast and the Middle West, it is hot at some times and very cold at other times. People in those states will have heart trouble after the weather changes in February or March.
The weather can also influence intelligence. For example, in a 1983 study by scientists, the IQ scores of some college students were very high during storm, but after the storm, their scores were low. Storms can increase intelligence. Very hot weather, on the other hand, can decrease(减少) it. Students in many schools of the United States often do badly in exams in the hot months of the year(July and August).
Weather also has a strong effect on people’s feeling. Winter may be a bad time for thin people. They usually feel cold during these months. They might feel depressed during cold weather. In hot summer weather, on the other hand, fat people may feel unhappy. At about 65F, people become stronger.
Low air pressure(气压) makes people feel free, but it also increases forgetful- ness. People leave more bags and umbrellas on buses and in stores on low pressure days. There is a“perfect weather”for work and health. People feel best at a tempera- ture of about 64F with 65 percent humidity(湿度).
Are you feeling sick, sad, tired, forgetful, or very intelligent today? The weather may be the reason.Intelligence may be lower______.
A.during a storm | B.when it is sunny |
C.on a very hot day | D.when you take in an exam |
In the third paragraph,“depressed”means .
A.兴奋的 | B.愉快的 | C.忧郁的 | D.担心的 |
In“perfect weather”, .
A.both the fat and the thin are healthy |
B.the students do very well in examinations |
C.the air pressure is low |
D.the humidity is 65 percent and the temperature is about 64F |
When you look at your food, some ingredients are easy to see. For example, there is cheese on your pizza and butter on your bread. But our meals are also filled with ingredients you can’t see. And you might be surprised to learn just how much those hidden (隐藏的) ingredients affect your health.
Salt is a perfect example of an ingredient that you might not notice, even when you eat a lot of it. More than 75% of the salt we eat is hidden in restaurant meals, fast food and processed (加工过的) food , such as French fries, hot dogs and even biscuits.
Salt is important to us. It keeps our muscles (肌肉)working and our nerves (神经)sending messages through the whole body. Salt can be used to clean teeth, to make our skin smooth or added to a relaxing bath. Salt is also used to help make food last (持续) longer.
However eating too much salt can cause heart problems. For a long time, heart trouble has been regarded as an adult problem, but new research shows that salt is starting to affect kids. Then how much salt is safe for kids every day? Let's look at the following chart:
Ages |
Amount of Salt Every Day |
1—3 years old |
2 grams |
4—6 years old |
3 grams |
7—10 years old |
5 grams |
11 or more than 11 years old |
6 grams |
Kids should not eat more than that.The underlined word “ingredients” means “__________” in Chinese.
A.配料 | B.热量 | C.营养 | D.脂肪 |
The first two paragraphs tell us _________.
A.how much salt people need every day | B.the result of eating too much salt |
C.the importance of salt in our everyday life | |
D.though people eat much salt every day, they may not notice it |
Which of the following is Not the use of salt according to the passage?
A.Salt keeps muscles working. | B.Salt helps to make food last longer. |
C.Salt helps to see clearly. | D.Salt can be used to clean teeth. |
If Tim is 10 years old, how much salt should he eat every day?
A.2 grams. | B.3 grams. | C.5 grams. | D.6 grams. |
What can we learn from the passage?
A.Young children have few heart problems according to the new research. |
B.A lot of food we eat has hidden salt in it, even some biscuits. |
C.Salt can be used instead of soap while we’re taking a bath. |
D.A five-year-old boy should have at least six grams of salt every day. |
Liu Xu is a student from a middle school in Guangxi. Once he was riding home when a robber (盗贼) suddenly jumped out from the roadside. He pulled Liu Xu off his bike and rode away. Liu Xu was scared, but he didn’t run after the robber. He found a telephone and called the police at 110.
“Safety is the first important in such a situation,” Liu said, remembering what his teacher had told him in his first aid class. “It is not safe to run after an adult who is stronger than you.”
Liu’s school has compulsory (必修的) first aid education. Students must take the class once a week.
Teenage safety has become a serious issue recently. According to a survey, about 16,000 teenagers die in accidents in China every year.
At Liu’s school the first aid classes are to “teach students skills how to protect and save themselves in emergencies (紧急情况)”. Students there often learn by role-playing in first aid classes. For example, one student performed as a stranger knocking at a door. Another one stood inside the door and asked several questions before letting the “stranger” in. Then they changed roles and did it again. They learned a lot while having fun at role-playing.
The topics of the first aid classes are regularly updated (适时的). The students have learned skills for surviving in earthquakes. The teacher also taught the students not to go out at night. If someone tried to do bad things to them, they should quickly run into crowed place. Liu Xu’s _________ was robbed according to the passage.
A.money | B.bike | C.backpack | D.mobile phone |
What did Liu Xu remember when he met the robber?
A.Safety is the first important. | B.How to run away from an earthquake. |
C.To run after the robber quickly. | D.Not to go out at night. |
Students in Liu’s school must have compulsory first aid class __________.
A.once a day | B.twice a day | C.once a week | D.twice a week |
The underlined word “stranger” is __________ here.
A.a robber | B.a student | C.a teacher | D.a real stranger |
The best title for the passage is __________.
A.Teenage Safety | B.A Robbery (抢劫) |
C.Importance of Safety | D.Life-saving Classes |