Read the following article and select the best answer. Article: By 2050, half of the world's population will live in the tropics--the ly warm belt that circles the globe--according to State of the Tropics, a report released today. Rapid population growth, along with economic growth, means that the region's influence will grow in coming decades, the authors of the 500-page work predict. The project, first launched in 2011, aimed to answer one significant question: Is life in the tropics improving? To find out, the researchers analyzed environmental, social, and economic indicators collected over 6 decades. It finds that the region has made "extraordinary progress" in many areas. For example, more people have access to safe drinking water, and the number of protected areas is increasing. The tropics also have outperformed the rest of the world in economic growth over the past 30 years. However, some challenges remain. Investment in research and development, for example, has increased cautiously, but tropical nations still invest less than the rest of the world. "As a proportion of GDP the Rest of the World invests almost four times as much in research and development than the Tropics." concludes the report. The report also includes a new analysis of how climate change will affect the region. Many plant and animal species are moving poleward in an attempt to stay within their preferred environmental conditions in the tropics, the authors write. However, some organisms may not be able to keep pace with the changing conditions, they predict. As a result, they can experience population declines or go extinct. In addition, an expanded tropical zone also threatens health and safety issues, the authors warn. As regions become more suitable to insects such as mosquitoes and ticks, the spread of insect-borne diseases such as malaria, dengue, and Lyme disease could rise, causing a burden to human health and the economy. Bruna, a researcher, says he sees a lot to be concerned about in the report. "While we've made incredible advances in some areas, I think the risks for the tropics... Question: Which of the following best describes the writer's attitude? - Critical. - Optimistic. - Objective. - Subjective.
Objective.

Read the following article and select the best answer. Article: Surprises often come in boxes. Birthday presents wrapped in colorful paper, brown paper packages mailed from a friend. No matter what kind of box it is, people like to open it up and see what's inside. In America, and in many other countries, one special kind of box contains the future. It's called a ballot box. What people put into the box on election day can change the course of history. Elections are the lifeblood of a democracy. The word democracy literally means "the people rule," an important concept in American history. In the mid-1700s, England began passing laws that made the American colonies angry. The colonists had to pay more and more taxes and enjoyed less and less freedom. They felt the government of England didn't represent their interests. On July 4, 1776, the colonies declared their independence from England. They wanted to establish a democracy where people could have a voice in government. An effective democracy holds regular elections. In America, elections are held every two years for members of Congress. In these elections, all seats in the House of Representatives and one-third of the Senate seats are up for grabs. In addition, every four years, voters go to the polls to elect the nation's president and vice-president. Voters also regularly cast their ballots for state and city government leaders and local school board members. Sometimes they also have to vote on a proposed law. In the American electoral system, people don't really vote for presidential candidates. Instead, voters cast their ballots for "electors" who support each candidate. Each state has as many electors as the total number of its representatives in Congress. This equals two senators per state plus the number of its representatives in the House (which is based on the state's population). The candidate who has the most votes in a state wins all of the state's electors. To win the presidential election, a candidate must gain at least 270 of the 538 total electoral votes. Over the years, the U.S. has made a number of... Question: What's the main idea of this passage? - Birthday boxes in the U.S. - Election systems in the U.S. - Election reforms in the U.S. - Democracy in the U.S.
Election systems in the U.S.

(Q).
Read the following article and select the best answer. Article: The US government has started a website, Admongo, to help children think critically about the advertising aimed at them. It claims to provide visitors with an "education" through games and other amusement. A cartoon man dressed in old time pilot clothing greets visitors to Admongo. "Call me Haiz", he says upon arrival in a rocket ship that opens up with a crazy world inside it. Spacey dance music plays in the background as Haiz tells visitors that they need to learn about advertising. Its inventors say eight to twelve years old is the age kids develop their critical thinking abilities. Kids that age are also a big market for advertisers. The idea behind Admongo is to teach children three things: To _ the advertiser. To know what the advertiser is really saying. And to know what the advertisement is trying to get the child to do. Children learn these things through a video game. They create their own game character. They can choose different skin colors, hair styles, eye and mouth shapes. Then they begin a trip through ad-land, where there are ads on buses and billboards. The players have to find all the marketing in the neighborhood before they can move on to the next level. The Admongo game takes players inside a home, to the advertising studio and everywhere else ads can be found. It is a complete exploration of the world of marketing. One such area is food marketing. The Federal Trade Commission (FTC) says it is a big business. The FTC estimates that food, drink and fast-food restaurants spent more than one and a half billion dollars on advertising to young people in 2010. The FTC says children are important for three reasons. They buy products. They influence parents and caregivers to buy. And they are the future adult buyers of the products. A recent study says most advertising aimed at children is for foods of the lowest nutritional value. First Lady Michelle Obama has said she would like to see advertisers marketing healthy foods for children. Question: Children are important for advertising because they are _ . - important for the society - the most potential buyers - easily influenced by ads - easily affected by poor products
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the most potential buyers