Why hasn’t he come?________ on time, we would have to put off the trip.

       Millions of people visit Yosemite National Park every year to see the tall waterfalls and mountains. These mountains are a splendid sight when viewed form the valley floor. Lots of stores, hotels, and restaurants are needed to handle the crowds. Also, water, roads, and other service systems are part of the infrastructure (基础设施) that must be maintained.

       Unfortunately, these systems are starting to break down. It’s not just in Yosemite but in national parks around the nation.

       Yosemite is thirty years old according to Dennis Galvin, a National Park Service worker. The Park is not only old but worn out. Two or three times as many visitors come every year. That is too many visitors for the park to deal with.

       Four years ago a storm washed out a water pipeline in the Grand Canyon. The National Park Service had to send water trucks to provide water for the visitors. Last month pipes almost broke again and roads had to be closed for a while.

       Why hasn’t the National Park Service kept up the park repairs? There is a lack of money. The United States has 378 monuments, parks, and wilderness areas. Between three and four billion dollars are needed for repairs.

       Yosemite is one national park that does have money for repairs. It has two hundred million dollars but cannot spend it any way it chooses. When the park workers started widening the road, they were forced to stop by the Sierra Club. The club claimed that the road work was damaging the Merced River that runs through the park.

       A sierra Club lawyer, Julia Olson, feels that the infrastructure needs to be moved out of Yosemite. That way less pressure will be put on the already crowded park.

According to the text, the mountains in Yosemite look most splendid when they are appreciated from ______.

A. the bottom of the valleys                              B. the top of the mountains

C. the side of the mountains                              D. the edge of the valleys

National parks like Yosemite in the U.S. find it increasingly difficult to meet the need of visitors because ______.

A. their transport management needs improving

B. they spend too much on their service systems

C. their service systems frequently go out of order

D. they need help from environmental organizations

The main problem of Yosemite National Park is its ______.

A. rundown water pipes                                    B. overcrowdedness

C. lack of money                                              D. narrow roads

68.   According to the text, the Sierra Club is most likely to be ______.

       A. an environmental group                                B. an information center

       C. a travel service                                             D. a law firm

  What will you be doing when you are 26 years old? Studying at university or working for a living? Take a look at what Albert Einstein was doing at the age of 26.

100 years ago, Einstein was working in Switzerland. His hobby was physics. Without much money or help, he wrote five papers(论文) for a physics magazine. Three of these greatly changed the study of physics and our understanding of space, time, light and matter(物质). His most famous work is on the Theory of Relativity(相对论). Einstein was given the Nobel Prize for his discoveries. Although he also did many other things later, the years 1905 has been called Einstein’s “Year of Wonders”. It has been 100 years since then. Because of this, the UN has named 05 the World Year of Physics.

Today, over fifty years after Einstein’s death, a question is asked,  “ Will there ever be another Einstein?” It may take a long time. After all, Einstein was born more than 200 years after Sir Isaac Newton, another great scientist. Besides, physics is a different field now, and education is different, too. Even if you can’t be the next great scientist, it is still helpful to remember some of the things that made Einstein great. He thought independently(独立地) and read widely. He left with us a formula(公式) for life: If A is a success in life, then A="X+Y+Z." X is work, Y is play, and Z is keeping your mouth shut.

1.The year 1905 is known as Einstein’s “Year of Wonders” because           .

2.Why hasn’t there been another scientist as great as Einstein?

3.The UN has named 05 the World Year of Physics because           .

4. What does Einstein’s formula for life mean?

   Millions of people visit Yosemite National Park every year to see the tall waterfalls and mountains. Thee mountains are a splendid sight when viewed from the valley floor. Lots of stores, hotels, and restaurants are needed to handle the crowds. Also, water, roads, and other service systems are part of the infrastructure(基础设施)that must be maintained。

Unfortunately，these systems are starting to break down. It’s not just in Yosemite but in national parks around the nation.

Yosemite is thirty years old according to Dennis Galvin, a National Park Service worker. The park is not only old but worn out. Two or three times as many visitors come every year. That is too many visitors for the parks to deal with.

Four years ago a storm washed out a water pipeline in the Grand Canyon. The National Park service had to send water trucks to provide water for the visitors. Last month pipes almost broke again and roads had to be closed for a while.

Why hasn’t the National Park Service kept up the park repairs? There is a lack of money. The United States has 378 monuments, parks, and wilderness areas. Between three and four billion dollars are needs for repairs.

Yosemite is one national park that does have money for repairs. It has two hundred million dollars but cannot spend it any way it chooses. When the park workers started widening the road, they were forced to stop by the Sierra Club. The club claimed that the road work was damaging the Merced River that runs through the park.

A sierra Club lawyer, Julia Olson, feels that the infrastructure needs to be moved out of Yosemite. That way less pressure will be put on the already crowded park.

65. According to the text, the mountains in Yosemite look most splendid when they are appreciated from _______

A. the bottom of the valleys   B. the top of the mountains

C. the side of the mountains    D. the edge of the valleys

66. National parks like Yosemite in the U.S. find it increasingly difficult to meet the need of visitors because ________

A that transport management needs improving 

B. they spend too much on their service systems

C. their service systems frequently go out of order

D. they need help from environmental organizations

67. The main problem of Yosemite National Park is its _______

A. rundown water pipes   B. overcrowdedness   C. lack of money   D. narrow roads

68. According to the text, the Sierra Club is most likely to be ______

A. an environmental group  B. an information center  C. a travel service  D. a law firm

—We are worried about Tom. Why hasn’t he come back?

—Don’t worry. He ______ in a traffic jam.

A. might be caught    B. may have been caught

C. can have been caught          D. should have been caught