—What would you wish to do if you were a college student again
—That’s very hard to say, but I wish I （）when I was a college student.

正确

错误

Every morning, kids from a local high school are working hard. They are making and selling special coffee at a coffee car6. They are also making a lot of money.

These students can make up to twelve hundred dollars a day. They are selling their special coffee to airplane passengers. After the students get paid, the rest of the money goes to helping a local youth project.

These high school students use a space in the Oakland airport, h is usually very crowded. Many people who fly on the planes like to drink the special coffee.

One customer thinks that the coffee costs a lot but it is good and worth it. Most customers are pleasant but some are unhappy. They do not like it if the coffee cafe is not open for business.

The students earn $ 6.10 an hour plus tips. They also get school credit while they learn how to run a business. Many of the students enjoy the work although it took some time to learn how to do it.

They have to learn how to steam milk, load the pots, and add flavor. It takes some skill and sometimes mistakes are made. The most common mistake is forgetting to add the coffee.

A possible negative outcome of administering vaccines.

The practical use of a vaccine to control an epidemic disease.

A method by which vaccines are employed against the disease.

The effectiveness of vaccines in curing certain disease.

Alaska, which was called Russian America before it was sold to the United States of America, joined the union as the forty-ninth state in 1959.

Alaska is now the largest of all the 50 states of the United States.

It was in 1867 that President A. Johnson’s Secretary of State (国务卿) ,Seward bought Alaska from the Russians at a cost of 7.2 million. The buying of the huge northern land mass seemed at first something foolishly done. Not only was Alaska difficult to reach, but it was also hard to live in, and it appeared to have no importance in time of war. Besides, there are volcanoes there as Alaska lies on the Pacific "ring of fire" (火山带). In Alaska large treeless areas are covered with snow all the year. For these reasons the buying of Alaska was called "Seward’s Fooly" at that time.

However, in 1896 gold was found in Alaska, and people poured into the land quickly. Since then other important natural resources were discovered, including oil. Soon people changed their thinking about "Seward’s Fooly" . But most people visit Alaska in order to see the endless beauty of nature that the northern land discloses to them. For instance, there are about 11,000 islands in Alaska. And in a certain area of Alaska the sun does not set for 82 days every year.