更多"Never before can we witness such a "的相关试题:
[单项选择]
Welcome to Yellowstone National Park. Before we start our nature walk today, I’d like to give you a brief introduction to our National Park Service. The National Park Service began in the late 1800’ s. A small group of people found the land now called Yellowstone, and after hours of discussion around a campfire they decided that it should be enjoyed by everyone. Two years later the government declared it the first national park in the world.
After it became a national park, many other areas of beautiful scenery were set aside and in 1916 these parks began to be managed by the National Park Service.
I’m now employed by the National Park Service and I’m on duty at all time to answer questions and help visitors with any difficulty. Nature walk, guided tours, and campfire talks are offered by specially trained members. The Park Service also protects the animals and plants within the parks.
Who do you think the speaker is（ ）.
A. A visitor to the park.
B. A clerk of the Park Service.
C. A guide from the touring party.
[单项选择]Before we can decide where to buy our materials, we require as much information as we can get on the suppliers.
A. 我们需要从各供应商处得到足够的信息，之后才能决定从何处购买材料。
B. 在决定从何处购买材料之前，我们需要各供应商给我们尽可能多的信息。
C. 我们可以先决定在哪里购买材料，然后再从卖方那里找出所有的相关信息。
D. 在决定从何处购买材料之前，我们需要收集尽可能多的关于各供应商的信息。
[单项选择]Since we have never been here before, we do not know which bus（）
A. should we take'
B. to be taking
C. to take
D. should take
[单项选择]Before, whenever we had wealth, we started discussing poverty. Why not now Why is the current politics of wealth and poverty seemingly about wealth alone Eight years ago, when Bill Clinton first ran. for president, the Dow Jones average was under 3,500, yearly federal budget deficits were projected at hundreds of billions of dollars forever and beyond, and no one talked about the "permanent boom" or the "new economy." Yet in that more straitened time, Clinton made much of the importance of "not leaving a single person behind." It is possible that similar "compassionate" rhetoric might yet play a role in the general election.
But it is striking how much less talk there is about the poor than there was eight years ago, when the country was economically uncertain, or in previous eras, when the country felt flush. Even last summer, when Clinton spent several days on a remarkable, Bobby Kennedy-like pilgrimage through impoverished areas from Indian reservations in South Dakota to g
A. difficult
B. past
C. wealthy
D. distant
[单项选择]Children can speak before they can read or write shows that language is
A. arbitrary.
B. used for communication.
C. productive.
D. basically vocal.
[单项选择]Before we move we should have a garage sale to get rid （ ） some of this furniture.
A. for
B. of
C. from
D. to
[单项选择]A) They thought to buy things before the prices went up.
B) They bought things because they remembered the Great Depression.
C) They were concerned about spending money.
D) They didn’t want to spoil theft children.
[单项选择]Passage Four
How can we get rid of garbage Do we have enough energy sources to meet our future energy needs
These are two important questions that many people are asking today. Some people think that man might be able to solve both problems at the same time. They suggest using garbage as an energy source, and at the same time it can save the land to hold garbage.
For a long time, people buried garbage or dumped it on empty land. Now, empty land is scarce. But more and more garbage is produced each year. However, garbage can be a good fuel to use. The things in garbage do not look like coal, petroleum, or natural gas; but they are chemically similar to these fossil fuels. As we use up our fossil-fuel supplies, we might be able to use garbage as an energy source. Burning garbage is not a new idea. Some cities in Europe and the United States have been burning garbage for years. The heat that is produced by burning garbage is used to boil water. The steam th
A. The shortage of energy and air pollution.
B. The shortage of energy and the land to hold garbage.
C. Air pollution and the shortage of fossil fuel.
D. Air pollution and the shortage of land to hold garbag
