Each year there is an increasing number of cars on roads and street are millions of new cars are produced. One out of every six Americans works at putting together the parts of cars, driving trucks, building roads of filling cars with gas. Americans won’t live without cars!
Most Americans find it hard to think what life would be without a car. However some have realized the serious problem of air pollution by cars. The polluted air is poisonous(有毒的) and dangerous to health.
One way to get rid of(排除)the polluted air is to build a new kind of car. That’s what several of the large car factories are trying to do. But to build a clean car is easier said than done. Progress in this field has been slow.
Another way is to take the place of the car engine(发动机) by something else. Engineers are now working on some new cars. Many makers believe that it will take years to develop a practical model that pleases man.
To prevent the world from being polluted by cars, we’ll have to make some change in the way many of us live. Americans, for example, have to cut down on the number of their cars. They are encouraged to travel and go to work by bike. Riding a bike is thought to help keep the air clean.
But this change does not come easily — a large number of workers may find themselves without jobs if a car factory closed down. And the problem of air pollution would become less important than that of unemployment(失业).
Although cars have brought us a better life, they have also brought us new problems.
The writer wants to tell us that ______.

A:riding a bike is the only way out B:the number of cars must be cut down C:man won’t live without cars D:cars bring us not only a better life but also serious problems

Allen: I’ve never been a big fan of the bears, especially the vacation show. On my last trip to Disneyland(1999) we passed it by, because we didn’t want to spend the time on something we didn’t really enjoy. If we’d known it would be closed by our next visit, I’m sure we would have watched it one more time. I was just making the point that it wasn’t until Disney announced the closing that this feeling suddenly sprang(弹跳) up for the Country Bear show at Disneyland.
But I think the idea of keeping some attractions open forever regardless of the number of visitors it gets is a mistake. We all have great memories of the Bears, but clearly very few kids today (or I should say families today) are making those same memories from this show. That may be a sad fact, but it’s a fact. For whatever reason, the show doesn’t pull in the numbers. Isn’t it right to use the Country Bear space to bring in more popular attraction so that more kids today can make those magic memories of an attraction they like Otherwise aren’t we just telling the kids today that they "have to" make great memories of the Bears, when it’s obvious that the kids themselves are not enjoying the Bears as we did
Roger: I am very disappointed that they have decided to retire the Country Bear Playhouse. I remember going to the show as a child, and still enjoying it as a teenager, and now as a young adult. It is true that there aren’t a lot of shows left at DL and with this one closing even less. Being at DL does require a lot of walking, and it is nice to have an attraction that is a place to sit and enjoy a good show. I understand that DL has to develop, but there has to be some history to the Disneyland that Walt Disney first designed. There should be some parts of DL that just never go away and this is one of them. By the time I have children it looks like there won’t be any attractions that I can say. I went as a child at the rate they are going.
Now the Bears are leaving. What I want to say is: stop trying to compete with everyone! DL is the best, because of attractions like the Country-Bears. If DL insists on destroying all of its magic to make way for the latest, well, then it might as well be just another theme park.
What news might get people talking about the problem of the Country Bears

A:The Country Bear Playhouse will be closed. B:There will be a new attraction for our guests at Disneyland. C:The number of visitors to the Country Bear Playhouse is falling. D:The Bears will retire because of old age and can’t give shows any mor

Cell phones are a danger on the road in more ways than one. Two new studies show that talking on the phone while traveling, whether you’re driving or on foot is increasing both pedestrian deaths and those of drivers and passengers, and recommend crackdowns on cell use by both pedestrians and drivers.
The new studies, lead-authored by Rutgers University, Newark, Economics Professor Peter D Loeb, relate the impact of cell phones on accident fatalities to the number of cell phones in use, showing that the current increase in deaths resulting from cell phone use follows a period when cell phones actually helped to reduce pedestrian and traffic fatalities. However, this reduction in fatalities disappeared once the numbers of phones in use reached a "critical mass" of 100 million, the study found.
These studies looked at cell phone use and motor vehicle accidents from 1975 through 2002, and factored in a number of variables, including vehicle speed, alcohol consumption, seat belt use, and miles driven. The studies found the cell phone-fatality correlation to be true even when including factors such as speed, alcohol consumption, and seat belt use.
Loeb and his co-author determined that, at the current time, cell phone use has a "significant adverse effect on pedestrian safety" and that "cell phones and their usage above a critical thresholds adds to motor vehicle fatalities." In the late 1980s and part of the 1990s, before the numbers of phones exploded, cell phone use actually had a "life-saving effect" in pedestrian and traffic accidents, Loeb notes. "Cell-phone users’ were able to quickly call for medical assistance when involved in an accident. This quick medical response actually reduced the number of traffic deaths for a time," Loeb hypothesizes.
However, this was not the case when cells were first used in the mid-1980s, when they caused a "life-taking effect" among pedestrians, drivers and passengers in vehicles. In those early days, when there were fewer than a million phones, fatalities increased, says Loeb, because drivers and pedestrians probably were still adjusting to the novelty of using them, and there weren’t enough cell phones in use to make a difference in summoning help following an accident, he explains.
The "life-saving effect" occurred as the volume of phones grew into the early 1990s, and increasing numbers of cells were used to call 911 following accidents, leading to a drop in fatalities, explains Loeb. But this life-saving effect was canceled out once the numbers of phones reached a "critical mass" of about 100 million and the "life-taking effect" increased accidents and fatalities outweighed the benefits of quick access to 911 services, according to Loeb.
Loeb and his co-authors used econometric models to analyze data from a number of government and private studies. He and his co-authors recommend that governments consider more aggressive policies to reduce cell phone use by both drivers and pedestrians, to reduce the number of fatalities.
What is said about cell phone use in the mid-1980s in paragraph 5

A:It had a life-taking effect because there weren’t enough cell phones in use then. B:The increased use of cell phones then caused a "life-taking effect." C:Traffic fatalities increased then because the number of cell phones in use decreased. D:Traffic fatalities decreased then because the number of cell phones in use increase

下列运算符函数中，肯定不属于类Number的成员函数的是______。

A:Number operator+(Number); B:Number operator-(Number); C:Number operator*(int); D:Number operator/(Number,Number);

Each year there is an increasing number of cars on roads and street are millions of new cars are produced. One out of every six Americans works at putting together the parts of cars, driving trucks, building roads of filling cars with gas. Americans won’t live without cars!
Most Americans find it hard to think what life would be without a car. However some have realized the serious problem of air pollution by cars. The polluted air is poisonous(有毒的) and dangerous to health.
One way to get rid of(排除)the polluted air is to build a new kind of car. That’s what several of the large car factories are trying to do. But to build a clean car is easier said than done. Progress in this field has been slow.
Another way is to take the place of the car engine(发动机) by something else. Engineers are now working on some new cars. Many makers believe that it will take years to develop a practical model that pleases man.
To prevent the world from being polluted by cars, we’ll have to make some change in the way many of us live. Americans, for example, have to cut down on the number of their cars. They are encouraged to travel and go to work by bike. Riding a bike is thought to help keep the air clean.
But this change does not come easily — a large number of workers may find themselves without jobs if a car factory closed down. And the problem of air pollution would become less important than that of unemployment(失业).
Although cars have brought us a better life, they have also brought us new problems.
The writer wants to tell us that ______.

A:riding a bike is the only way out B:the number of cars must be cut down C:man won’t live without cars D:cars bring us not only a better life but also serious problems

Each year there is an increasing number of cars on roads and street are millions of new cars are produced. One out of every six Americans works at putting together the parts of cars, driving trucks, building roads of filling cars with gas. Americans won’t live without cars!
Most Americans find it hard to think what life would be without a car. However some have realized the serious problem of air pollution by cars. The polluted air is poisonous(有毒的) and dangerous to health.
One way to get rid of(排除)the polluted air is to build a new kind of car. That’s what several of the large car factories are trying to do. But to build a clean car is easier said than done. Progress in this field has been slow.
Another way is to take the place of the car engine(发动机) by something else. Engineers are now working on some new cars. Many makers believe that it will take years to develop a practical model that pleases man.
To prevent the world from being polluted by cars, we’ll have to make some change in the way many of us live. Americans, for example, have to cut down on the number of their cars. They are encouraged to travel and go to work by bike. Riding a bike is thought to help keep the air clean.
But this change does not come easily — a large number of workers may find themselves without jobs if a car factory closed down. And the problem of air pollution would become less important than that of unemployment(失业).
Although cars have brought us a better life, they have also brought us new problems.
The writer wants to tell us that ______.

A:riding a bike is the only way out B:the number of cars must be cut down C:man won’t live without cars D:cars bring us not only a better life but also serious problems

Allen: I’ve never been a big fan of the bears, especially the vacation show. On my last trip to Disneyland(1999) we passed it by, because we didn’t want to spend the time on something we didn’t really enjoy. If we’d known it would be closed by our next visit, I’m sure we would have watched it one more time. I was just making the point that it wasn’t until Disney announced the closing that this feeling suddenly sprang(弹跳) up for the Country Bear show at Disneyland.
But I think the idea of keeping some attractions open forever regardless of the number of visitors it gets is a mistake. We all have great memories of the Bears, but clearly very few kids today (or I should say families today) are making those same memories from this show. That may be a sad fact, but it’s a fact. For whatever reason, the show doesn’t pull in the numbers. Isn’t it right to use the Country Bear space to bring in more popular attraction so that more kids today can make those magic memories of an attraction they like Otherwise aren’t we just telling the kids today that they "have to" make great memories of the Bears, when it’s obvious that the kids themselves are not enjoying the Bears as we did
Roger: I am very disappointed that they have decided to retire the Country Bear Playhouse. I remember going to the show as a child, and still enjoying it as a teenager, and now as a young adult. It is true that there aren’t a lot of shows left at DL and with this one closing even less. Being at DL does require a lot of walking, and it is nice to have an attraction that is a place to sit and enjoy a good show. I understand that DL has to develop, but there has to be some history to the Disneyland that Walt Disney first designed. There should be some parts of DL that just never go away and this is one of them. By the time I have children it looks like there won’t be any attractions that I can say. I went as a child at the rate they are going.
Now the Bears are leaving. What I want to say is: stop trying to compete with everyone! DL is the best, because of attractions like the Country-Bears. If DL insists on destroying all of its magic to make way for the latest, well, then it might as well be just another theme park.
What news might get people talking about the problem of the Country Bears

A:The Country Bear Playhouse will be closed. B:There will be a new attraction for our guests at Disneyland. C:The number of visitors to the Country Bear Playhouse is falling. D:The Bears will retire because of old age and can’t give shows any mor