Tanzania, the largest country in East Africa, is a land of natural beauty.
Tanzania is to the west of the Indian Ocean. Highlands rise in the northwest part of Tanzania. From highlands in the northwest, the land goes down toward the coast in the southeast.
The fishing areas in Tanzania are among the richest in the world. The lakes, rivers, and the Indian Ocean have over 1,700 fish species. More than 800 of them live in freshwater, while more than 900 live in seawater.
Tanzania has a generally comfortable climate all year round, although some differences remain in some areas. There are two rainy seasons—the heaviest rains usually fall from March to May and another period of rain begins from October to February. The dry season, however, lasts from June to September with cooler temperatures.
Forests that receive plenty of rain are home to many wild animals. Almost one-third of the land has been set for the purpose of animal protection by the government. With more than 20 national parks, Tanzania is one of the most famous places for travelling. Inside the national parks, the wildlife is is protected from hunting. Many wild animals like elephants, lions, giraffes, zebras live in peace there.
【小题1】Where are the highlands in Tanzania?| A．In the northwest. | B．In the northeast. |
| C．In the southwest. | D．In the southeast. |
| A．forms | B．kinds | C．styles | D．groups |
A． | B． |
C． | D． |
| A．Hunting. | B．Fishing. | C．Tourism. | D．Growing trees. |
| A．To invite people to visit Tanzania. |
| B．To introduce the country Tanzania. |
| C．To call on people to protect the wildlife. |
| D．To give advice on how to travel Tanzania. |
We all need to quiet down! “The rising noise pollution in cities will become a top environmental problem,” the United Nations （UN） said in a report on Feb 17th. It asks governments to take action as soon as possible.
What is noise pollution?
According to the UN, unwanted noise about 65 decibels（dB分贝） is noise pollution. Noise becomes harmful when it’s over 75 dB and is painful above 120 dB. People who live near airports or highways get lots of noise pollution. When neighbors play rock loudly in their homes or shout around you, that’s also noise pollution.
Why is noise pollution bad?
“High levels of noise do harm to human health,” the UN report says. According to the Science magazine, too much noise causes health problems like stress and tiredness from poor sleep. More serious problems include heart disease and hearing loss. In Europe, 12,000 people die each year from effects of noise pollution, according to CGTN.
How can we fix the problem?
The European Commission says cities can fight noise pollution. One great way is to build barriers （围栏） along railroads and highways. Some European countries have also built roads of rubber. It’s the same rubber as your school’s playground. It makes cars quieter. How can you and I help? We can stop shouting around our houses!
根据材料内容选择最佳答案。
【小题1】What does the UN report want the countries around the world to do?
| A．Keep quiet about pollution. | B．Deal with noise pollution. |
| C．Stop cities from growing. | D．Protect the environment. |
| A．Unwanted sounds below 65 dB. |
| B．Sounds around you that are over 120 dB. |
| C．Neighbors’ music with little noise. |
| D．The sound of cars on the road of rubber. |
| A．Because noise pollution is harmful to human health. |
| B．Because the United Nations asks us to stop shouting. |
| C．Because 12,000 people die from noise pollution every day. |
| D．Because noise pollution is the most serious pollution in the world. |
| A．水泥 | B．塑料 | C．橡胶 | D．石子 |
| A．A UN Report About Sound |
| B．Noticing the Pollution around Us |
| C．Taking Action to Prevent Pollution |
| D．The Pollution We Can Hear |
| A
In the sky so high and wide, A rainbow forms with colors bright, Red, orange, yellow, green and blue, Indigo and violet, shining true. After rain, it comes out to play, Bringing joy to brighten the day. | B World’s largest iceberg (冰川), A23a, is on the move! As A23a gets farther from Antarctica (南极洲), the weather will get warmer. The iceberg will leave behind cold fresh water, changing the temperature and the saltiness of the water behind it. It will also leave behind minerals (矿物). All of these things will affect (影响) the plants and animals that live in the sea waters around it. |
| C
| D The Altiplano Plateau in South America is the highest place on Earth. The area receives the most sunlight on our planet. If you visit this area, make sure to bring sunscreen to protect your skin (皮肤) from the strong sunlight to stay safe. |
【小题1】Which rhymes are right for the poem in Passage A?
| A．aa-bb-cc. | B．ab-ab-ab. | C．aa-bc-bc. |
| A．How old is A23a? |
| B．In which country is the largest iceberg now? |
| C．How does the moving iceberg affect the plants and animals around it? |
| A．Protecting trees. | B．Saving water. | C．Recycling rubbish in the future. |
| A．A survey. | B．A geographic magazine. | C．A song for the Altiplano Plateau. |
| A．Water and trees. | B．Rainbow and sunlight. | C．Humans and nature. |
A comet sometimes looks like a star. Like a planet, a comet has no light of its own. It shines from the sunlight it reflects (反射). Like the earth, a comet goes round the sun, but on a much longer path (轨道) than the earth travels.
If a comet isn’t a star, what is it then?
Some scientists think that a large part of a comet is water frozen into pieces of ice and mixed with iron and rock dust and perhaps a few big pieces of rock. When sunshine melts (融化) the ice in the comet, great clouds of gas go trailing after it. These clouds, together with the dust, form a long tail.Many people perhaps have seen a comet. However no one knows how many comets there are. There may be millions of comets, but only a few come close enough for us to see.
An Englishman named Edmund Halley, who lived from 1656 to 1742, found out a lot about the paths that comets take through the sky. Some comets move out of our sight and never come back. Others keep coming back at regular times. A big comet that keeps coming back was named after Halley because he was the one who worked out when it would come back again. Maybe you have ever seen Halley’s Comets because the last time it came close to the sun and the earth was in the year 1986. Then people all over the world were outside at night to look at it. You will probably be able to see Halley’s Comets when it comes near the earth again.
【小题1】A comet is like ________.
| A．sun | B．moon | C．sunlight | D．the earth |
| A．water and rock |
| B．water frozen into pieces of ice and mixed with iron |
| C．ice, iron and rock dust |
| D．only a few big pieces of rock |
| A．haven’t seen any comets | B．have seen all comets |
| C．have seen a comet at daytime | D．have seen a comet |
| A．at any time | B．at noon | C．at regular times | D．at daytime |
| A．in 1990 | B．in 1980 | C．in 1986 | D．in 1989 |
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