Read the following article and answer the question. Article: Relation between the United States and Columbia suffered for many years because of an incident involving the Republic of Panama. By the end of the Spanish-American War in 1898, many Americans felt that an easier and faster way was needed to get ships from the Atlantic Ocean to the Pacific Ocean. Some people in the United States first believed that a canal across Nicaragua was the answer. However, President Theodore Roosevelt decided that a canal through Panama would be a better choice. In order to build the canal , the United States had to negotiate a treaty with Columbia , which at that time controlled Panama . Roosevelt offered Columbia $ 10 million plus $ 250,000 a year for 99 years for a six-mile-wide strip of land across Panama. Columbia rejected the United States' offer. This ranged President Roosevelt, and negotiations with Columbia ended. In 1903, a revolution broke out in Panama. The United States ships were sent by President Roosevelt to protect the Panamanian revolutionaries from Columbian forces. The revolution succeeded, and Panama declared its independence from Columbia. The United States then negotiated with the newly formed government. A treaty was signed, and the United States began building the canal. As a result of the incident, Columbia and the United States remained on bad terms for many years. Not until 1921, when the United States agreed to pay Columbia some compensation for its territory, did relations between the two countries improve. Question: The passage mainly gives us _ . Answer:
OPTIONS:
- advice
- information
- humor
- News

Answer: information

Read the following article and answer the question. Article: Fighting racial stereotypes on US campuses often begins by putting students of different ethnic backgrounds together -- under one dormitory roof. Sam Boakye was a freshman at Ohio State University and the only black student on his floor. He was determined to get good grades -- in part to make sure his white roommate had no basis for negative racial views. "You're pushed to do better, to challenge the stereotype that black people are not that smart," he told theNew York Times. Several recent studies have found that having a roommate of a different race can reduce prejudice , diversify friendships and even promote students' academic performance. In a study by Ohio State psychology professor Russell Fazio, black freshmen who came to college with high test scores earned better grades if they had a white roommate--even if the roommate's test scores were low. Another study on student interaction by Duke University suggests that freshmen with roommates of a different race were the most likely to diversify their friendships. "Just having diversity in classrooms doesn't do anything to increase interracial friendships," said Claudia Buchman, an author of the Duke study. "But living together with a different-race roommate does lead to more interracial friendships." There are, however, some problems with such room assignments. Fazio's study found that three times as many randomly assigned interracial roommates weren't living together at the end of the semester, compared with white roommates. Interracial roommates also spent less time together, had fewer joint activities and were less involved with each other's friends than white pairs. As for Boakye, this is not the case. "A lot of white students come without much exposure to diversity, so when their first interaction with a black guy isn't bad, they will make more black friends. I think I made a good impression on my freshman roommate. I saw him this year, and he said, 'Hey dude, you're not the only black friend I have.' That felt good." Question: Having a roommate of a different race can have the following benefits EXCEPT _ . Answer:
OPTIONS:
- making more friends
- reducing prejudice
- earning better grades
- improving physical health

Answer: improving physical health

Read the following article and answer the question. Article: Since the Internet came into homes, the daily life has never been the same again. But the thing that worries most of us is that we can get viruses from the Internet. But can we catch viruses on our cell phones? A new study in the journal Science says yes, but the spread of such mobile software that can bring harm to our cell phones won't reach dangerous levels until more cell phones are on the same operating system. Computers are easily attacked by viruses because they share data, especially over the Internet. Of course, nowadays, more people are using their cell phones more and more frequently. They use them for emailing, text messaging and downloading troublesome ring tones, etc.,so it is obvious that cell phone viruses are a threat as well. Scientists used nameless call data from more than six million cell phone users to help model a possible outbreak. And they concluded that viruses that spread from phone to phone by Bluetooth are not much concerned, because users have to be in close physical relation for their phones to "see" one another. However, viruses that spread through multimedia messaging services can move much faster, because they can come in disguise , such as a cool tune sent by a friend. The good news is that to be effective, these viruses need their victims to all use the same operating system, which not enough of us do. Because there is no Microsoft operating system for mobile phones, yet. Thank goodness. Question: What is the passage mainly about? Answer:
OPTIONS:
- The operating system of cell phones.
- The threat of cell phone viruses.
- The wide use of cell phones.
- Computer viruses.

Answer:
The threat of cell phone viruses.