-What a heavy haze (霾)! The air pollution is terrible now.-It will be worse we take action to protect the environment.A.if B.unless C.because D.although 题目和参考答案——青夏教育精英家教网—

题目内容

—What a heavy haze (霾)! The air pollution is terrible now.

—It will be worse ______ we take action to protect the environment.

A.if B.unless C.because D.although

练习册系列答案

相关题目

Do you know the ______ (重) of the Golden Gate Bridge?

—Can you tell me when the Jing - Jiu High – speed Railway will be completed?

— In the year 2020. So it’s _________ for us to go out than before.

A.most convenient and fastest

B.more convenient and fast

C.more convenient and faster

Imagine you are taking a bus home at night. Suddenly your cellphone loses its signal. The television on the bus has no programs. Everything around us black-except for some strange colorful lights dancing in the sky. What is going on?

These are just the kinds of problems a solar storm might cause. Solar storms happen when solar flares (耀斑)break from the sun and travel towards Earth quickly. Actually, since Sept.4, 2017, the sun has burst out two big solar flares, the most powerful ones since at least 2008 according to NASA. They hit Earth on Sept.7.

Normally, Earth is protected by its magnetic field (磁场). But when strong solar storm mix with it, things change. On the one hand, the colourful lights of the aurora (极光)can be seen from the US and Europe, rather than just from polar (极地的)areas. But on the other hand, the storms can stop the satellite systems that control our computers, cell phones and GPS. They can even cause blackouts (断电) for weeks or months.

, but they can put astronauts in danger. Spacewalking astronauts might have only minutes to hide. For this reason, NASA never plans spacewalks during solar storms.

Scientists now have a new tool called EEGGL, which can predict solar storms and hopefully give us warnings when they arrive. As for the recent storm, scientists say it is still too early to know its effect on our technology. They are closely watching for any long-term effects.

1.A solar storm might cause problems EXCEPT that ______.

A.the cell phone loses its signals B.we get hurt in the eyes suddenly

C.we have no TV programs D.everything around turns black

2.Which of the following statements is TRUE ?

A.Solar storms happen when solar flares travel toward the sun quickly.

B.The aurora can only be seen from polar areas during a solar storm.

C.Satellite systems can't work unless they're connected with solar storms.

D.It took two solar flares 3 days to come to Earth in September, 2017.

3.Which of the following sentence can be put in “ ”.

A.Solar storms are good for people on the ground

B.Solar storms have great effect on people on Earth

C.Solar storms hardly harm people on the ground

D.Solar storms can harm people on Earth seriously

4.The passage is written in a /an ______ tone(语气).

A.angry B.serious C.crazy D.happy

High-speed railways have developed rapidly in our country. Today China has ______ high-speed rail network (铁路网) among the countries in the world.

A.long B.longer C.the longer D.the longest

Like all big cities, Paris has a traffic problem: lots of traffic jams and lots of pollution from exhaust fumes. So in 2007, the city began a scheme(计划) to improve the situation.

Under the Velib scheme(bicycle freedom), people can take a bicycle, use it for as long as they want, and then leave it at the same or another bicycle station. The first half-hour on the bike is free, but if you don’t return it after 30 minutes, you have to pay. But it’s only 1 euro a day or 29 euros a year! The bicycles are heavy (25 kilograms). They are all grey and have baskets. There are about 20,000 of them in the city, and around 1,450 bicycle stations. So there are a lot more Velib stations than the 298 metro stations!

Paris is not the first city to have a scheme like this — not even in France. Many years ago, Lyon started a free bicycle scheme. However, not everybody in Paris thinks it’s a great idea. One Parisian said, “These bicycles are only for short journeys. If people want to travel across the city, they won’t use a bicycle; they’ll still use their cars.”

A city spokesman said, “The bicycle scheme won’t solve all of our traffic problems, of course. But it might reduce pollution levels in the atmosphere. Traffic, together with factory fumes, is a big problem. Everyone knows about global warming. We know this is partly because rainforests are disappearing, but it’s also because there’s so much pollution in the world. We can help improve the situation right here. The Velib bikes might help people to lead a healthier life, too.”

“There aren’t any simple answers to traffic problems and pollution in cities,” the spokesman added. “But unless we do something now, there will be more traffic jams and temperatures will continue to rise. The problems in our environment will only get worse.”

1.How did Paris improve the situation of its traffic problem?

A.It built many bicycle stations. B.It is renting heavy bicycles to visitors.

C.It sold more bicycles to people. D.It is providing shared bikes for people.

2.How much will you have to pay if you use the bike for 45 minutes?

A.29 euros. B.1.5 euros. C.1 euro. D.Nothing.

3.According to the city spokesman, which of the following statements is true?

A.Traffic is not the only cause of global warming.

B.There aren’t any solutions to the city’s traffic problems.

C.Riding bikes is a perfect way to solve pollution problems.

D.It’s better to drive a car than to ride a bike to travel across the city.

4.What of the following is NOT a way to deal with global warming?

A.Using bicycles often. B.Protecting the rainforests.

C.Reducing factory fumes. D.Traveling across a city by car.

5.Which of the following may be a suitable title for the passage?

A.Traffic Jams in Paris B.Taking Action for the Environment

C.Bicycles and the Future D.The Advantages of the Velib Scheme

—I always fail in my goals. What should I do?

—You do have enough time for everything. This is the first thing you need to________.

A.explain B.realize C.develop D.compare

The government made a lot of plans in order to improve people’s living environment.

___________________________________________________________________

In China, long noodles are a symbol of long life.

_____________________________________________________________________

试题分类