High above Earth， more than a hundred weather...

High above Earth， more than a hundred weather satellites （卫星） are collecting information． They send pictures of cloud patterns to scientists on Earth． They also take measurements （测量） of weather conditions， such as air temperature， air pollution and lightning strikes． The meteorologists study the pictures． They make mathematical models using the measurements． The models can help meteorologists make forecasts． The models forecast how， when and where the weather will change in a few hours or in several days． They might forecast （预测） rain in your area tomorrow． If so， you might decide to take your umbrella to school．

More important， weather forecasts tell when bad weather is on the way． Floods， tornadoes， thunderstorms， and hurricanes put people in danger． Weather forecast can save lives． For example， satellites pictures taken over time show how fast a hurricane is growing and the path it is taking． People can be ready for the storm． Meteorologists are always working to make better forecasts．

The United States began using weather satellites in 1960． Today's satellites take clearer pictures and collect more information． Satellites collect information about cloud systems． They have a bird's-eye view of smoke from wildfires and of ash clouds from volcanoes （火山）． Weather satellites can also follow an oil spill on the ocean's flow． They can watch a cloud of sand blowing from a desert in Africa． Information from weather satellites is sent to supercomputers． These computers are huge， and they make mathematical models quickly．

Planes and ships need to know the weather so they can go around dangerous storms． A weather satellite can also help a ship in trouble． The satellite is part of a search and rescue （救援） system． The satellites can send a warning from the ship in danger to the U．S． Coast Guard． The Coast Guard can send out a rescue team．

1.A meteorologist in the first paragraph is a weather ______ ．

A.model B.satellite C.scientist D.pattern

2.What can we learn from the passage？ ______

A.Smoke or ash could hardly influence weather on earth．

B.Weather satellites are never more than forecasting bad weather．

C.Weather forecasts are of little importance to people's safety．

D.Modern weather satellites are looking for a wider use in weather forecast．

3.What can we infer from the passage？ ______

A.Weather forecast is widely used in every field of humans' life．

B.Weather satellites from the US are the most amazing and useful in the world．

C.Weather forecast would be different without computer or supercomputers．

D.Weather forecast would influence people more greatly as technology develops．

4.What may be the next paragraph about？ ______

A.Many planes fall into the ocean because of natural disasters．

B.Few ship accidents are avoided with the help of weather satellites．

C.No accidents take place with the search and rescue system．

D.More rescue teams around the world work together to save endangered ships．

九年级英语阅读单选中等难度题查看答案及解析

The Queqiao satellite(卫星) will form a　　　 bridge between controllers on Earth and the far side of the Moon.

A. contribution　　 B. communication　　 C. celebration　　 D. competition

九年级英语单选题中等难度题查看答案及解析

The Queqiao satellite(卫星)will form a ________　 bridge between controllers on the Earth and the far side of the Moon.

A.contribution B.communication C.celebration D.construction

九年级英语单选题中等难度题查看答案及解析

____ the help of man-made satellites卫星, we can know what the weather will be like in the future few days.

A. With     B. Under

C. Using    D. By

九年级英语单项填空简单题查看答案及解析

The earth is our home. We must take good care of it. Life today is easier than it was hundreds of years ago, but it has brought some new ________. One of the biggest problem is pollution. We can see it, smell it, drink it and even hear it. Man has polluted the _________ The more people, the more pollution. Many years ago, the problem was not so ________ because there were not so many people. When the ________ was used up or the river was not clean in a place, man went to another place. However, man is ________ polluting the whole world nowadays. Air pollution is still the most serious pollution. It's bad for living things in the world.

Many countries don't let people ________ anything bad in the houses and factories in the city. Pollution brought by SO2 is now the most dangerous kind of ________ pollution. It's mainly caused by heavy traffic. People say riding bikes is the ________ way to protect the environment in terms of means of transportation. Riding causes no pollution. But even in developed countries, most people don't go to work by bike. It's not because bikes are expensive or people would become tired if they ride to work. It's because the number of cars on the roads becomes larger. More and more people ________ their bikes and go to work by car and then things get worse and worse. There should be special roads only for bikes, making it so difficult and expensive for drivers to drive their cars in the city that they will go back to ________ their bikes.

1.A.matter B.questions C.troubles D.problems

2.A.moon B.star C.earth D.sun

3.A.hard B.clear C.serious D.big

4.A.land B.tree C.food D.fruit

5.A.sadly B.proudly C.slowly D.easily

6.A.burn B.create C.cook D.fire

7.A.water B.white C.air D.noise

8.A.least B.best C.most D.worst

9.A.put on B.put off C.put away D.put up

10.A.use B.buy C.sell D.repair

九年级英语完型填空困难题查看答案及解析

The earth is our home. We must take care of it. Life today is easier than it was hundreds of years ago, but it has brought some new problems. 1.. We can see it, smell it, drink it and even hear it. Man has polluted the earth. The more people, the more pollution. 2., the problem was not so serious. When the land was used up, the river was not clean in a place, man went to another place. Now man is slowly polluting the whole world. 3., It’s bad for living things in the world. Many countries don’t let burn something bad for air in houses and factories in the city. Pollution by SO2 is now the most dangerous kind of air pollution. It’s caused by heavy traffic. 4.. When you are riding, there is no pollution. But even in developed countries, most people don’t go to work by bike. It’s not because bikes are expensive or people are tired if they ride to work. It’s because the number of cars on the roads becomes larger. So more people put away their bikes and go to work by cars, then things getting worse and worse. 5.and make it so difficult and expensive for drivers to take their cars into the city that they will go back to use their bikes.

A.For industry was not well-developed.

B.We should have special roads only for bikes

C.Air pollution is still the most serious

D.Because there were not so many people many years ago

E.People say it’s best to ride bikes

F.One of the biggest problems is pollution

九年级英语七选五困难题查看答案及解析

There are more than two___ languages spoken in Nigeria.

A. hundreds　 B. hundreds　 of

C. hundred　　 D. hundred　 of

九年级英语单项填空简单题查看答案及解析

Our school has more than two ____ teachers and ____students.

A. hundreds of; thousands of

B. hundred; thousand of

C. hundred of , thousands

D. hundred; thousands of

九年级英语单项填空中等难度题查看答案及解析

(2014●淮安市)More than two _____ trees are planted in our neighborhood every year.

A. hundred　　 B. hundreds　　 C. hundreds of　　 D. hundred of

九年级英语null中等难度题查看答案及解析

Their school has more than two _____ teachers and _____ students.

A．hundreds of, thousands of                 B．hundred, thousands of

C．hundred of, thousand                    D．hundreds, thousands of

九年级英语单项填空中等难度题查看答案及解析