The Rainforest
The Amazon River Basin is home to the largest rainforest on Earth. The basin -- roughly the size of the forty-eight contiguous United States -- covers some 40% of the South American continent, and portions of eight countries. The basin is drained by the Amazon River, the world's largest river in terms of discharge, and the second longest river in the world after the Nile.
Since 1970, over 600,000 square kilometers (232,000 square miles) of Amazon rainforest have been destroyed. This deforestation is mainly due to land clearing for pastureland by commercial and speculative interests, misguided government policies, and commercial exploitation of forest resources.
Deforestation of the rainforest has long-term implications. The loss of habitat for many creatures ensures their extinction. The loss of vegetation depletes the oxygen in the atmosphere, which some say causes global warming.
According to the article, which statement is true?
- A. The Amazon is a clear blue during most of its length.
- B. The Amazon is the longest river in the world.
- C. The Nile carries the most boat traffic of any river in the world.
- D. The Nile is the longest river in the world.
Correct Answer: D
Rationale: The article mentions that the Amazon River is the second longest river in the world after the Nile. Therefore, the correct statement according to the article is D, that the Nile is the longest river in the world. The other options are either incorrect or not discussed in the passage. This question tests the understanding of the information provided in the passage about the Amazon River and its ranking in terms of length compared to the Nile.
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Have you ever found yourself staring at the ceiling at 2:00 a.m.? Have you kicked the blankets off to the floor from tossing and turning? Many longtime suffers of Insomnia know these situations all too well. As many as 17% of Americans find the restful break of sleep hard to achieve.
Lack of sleep affects intellectual abilities at work or school by causing a deficit in memory, attention, and concentration which in turn creates a feeling of irritation or depression. Chronic insomnia can result from a medical illness, a psychiatric condition, or from sleep apnea, a condition where an individual actually stops breathing during sleep. Sleep hygiene, developing good sleep habits, and non- pharmacological therapies such as herbs and spices are some solutions to Insomnia.
When the author wrote this passage, what was his/her intent?
- A. To be a satire for those with insomnia.
- B. To convince readers that insomnia is not a real medical condition.
- C. To explain insomnia and propose some solutions for the condition.
- D. To suggest ways to heal insomnia.
Correct Answer: C
Rationale: The passage is factual and aims to inform readers about insomnia, its effects, and possible solutions. The tone is educational rather than satirical, and the intent seems to be to explain the condition and propose non-pharmacological remedies. By discussing the impact of insomnia on intellectual abilities and suggesting solutions like sleep hygiene and non-pharmacological therapies, the author's main goal is to provide information and potential strategies for managing insomnia.
Searching for medical information can be confusing, especially for first-timers. However, if you are patient and stick to it, you can find a wealth of information. Your community library is a good place to start your search for medical information. Before going to the library, you may find it helpful to make a list of topics you want information about and questions you have. Your list of topics and questions will make it easier for the librarian to direct you to the best resources. Many community libraries have a collection of basic medical references. These references may include medical dictionaries or encyclopedias, drug information handbooks, basic medical and nursing textbooks, and directories of physicians and medical specialists (listings of doctors). You may also find magazine articles on a certain topic. Look in the Reader’s Guide to Periodical Literature for articles on health and medicine from consumer magazines. Infotrac, a CD-ROM computer database available at libraries or on the Web, indexes hundreds of popular magazines and newspapers, as well as medical journals such as the Journal of the American Medical Association and New England Journal of Medicine. Your library may also carry searchable computer databases of medical journal articles, including MEDLINE/PubMed or the Cumulative Index to Nursing and Allied Health Literature. Many of the databases or indexes have abstracts that provide a summary of each journal article. Although most community libraries don’t have a large collection of medical and nursing journals, your librarian may be able to get copies of the articles you want. Interlibrary loans allow your librarian to request a copy of an article from a library that carries that particular medical journal. Your library may charge a fee for this service. Articles published in medical journals can be technical, but they may be the most current source of information on medical topics.
What is the meaning of the word 'popular' as it is used in the third paragraph?
- A. Complicated
- B. Old-fashioned
- C. Beloved
- D. For the general public
Correct Answer: D
Rationale: In the context of the third paragraph, the word 'popular' refers to information that is intended for the general public. The paragraph discusses how Infotrac, a CD-ROM computer database, indexes popular magazines and newspapers, as well as medical journals such as the Journal of the American Medical Association and New England Journal of Medicine. This indicates that the information indexed is aimed at a broad audience rather than being specialized or exclusive. Therefore, the correct answer is 'D: For the general public.'
The federal government regulates dietary supplements through the United States Food and Drug Administration (FDA). The regulations for dietary supplements are not the same as those for prescription or over-the-counter drugs. In general, the regulations for dietary supplements are less strict. To begin with, a manufacturer does not have to prove the safety and effectiveness of a dietary supplement before it is marketed. A manufacturer is permitted to say that a dietary supplement addresses a nutrient deficiency, supports health, or is linked to a particular body function (such as immunity) if there is research to support the claim. Such a claim must be followed by the words, “This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.†Also, manufacturers are expected to follow certain good manufacturing practices (GMPs) to ensure that dietary supplements are processed consistently and meet quality standards. Requirements for GMPs went into effect in 2008 for large manufacturers and are being phased in for small manufacturers through 2010. Once a dietary supplement is on the market, the FDA monitors safety and product information, such as label claims and package inserts. If it finds a product to be unsafe, it can take action against the manufacturer and/or distributor and may issue a warning or require that the product be removed from the marketplace. The Federal Trade Commission (FTC) is responsible for regulating product advertising; it requires that all information be truthful and not misleading. The federal government has taken legal action against a number of dietary supplement promoters or websites that promote or sell dietary supplements because they have made false or deceptive statements about their products or because marketed products have proven to be unsafe.
What is the meaning of the phrase 'phased in' as it is used in the third paragraph?
- A. stunned into silence
- B. confused
- C. implemented in stages
- D. legalized
Correct Answer: C
Rationale: The phrase 'phased in' refers to implementing something gradually or in stages. In the context provided, it means that the requirements for GMPs were gradually introduced for small manufacturers over a period of time. This approach allows for a structured implementation of the regulations, ensuring that small manufacturers have time to comply with the new standards.
Exams
Subjective exams measure your ability in several areas. Besides recall information, you must be able to organize content logically and intelligently express yourself in a clearly understood manner. Subjective tests provide a greater opportunity for students to show their broad knowledge of a subject area. Answers may be in the form of paragraphs or lengthy essays.
When you review for an essay exam, concentrate on main ideas rather than details. Since essay tests are limited to a few questions, they are likely to deal with more important ideas of a subject. Prepare a list of questions that you think might be asked. Write an answer to each of your questions. Rather than writing complete sentences, jot down your thoughts in outline form. Doing so will help you organize the information so that you can express yourself clearly.
When you take the test, read through all the questions before you start to write. Allot time for each question, allowing more time for questions worth the most points. Read each question carefully to determine exactly what is being asked. Pay attention to words such as define, illustrate, explain, list, compare, and contrast. Each word requires a different type of response.
In answering subjective questions, the student should
- A. keep it brief and specific.
- B. capitalize the matching letters.
- C. include more than is asked.
- D. write out the words - true or false.
Correct Answer: A
Rationale: When answering subjective questions, it is advised to keep responses brief and specific, as indicated in the passage. While subjective exams allow for detailed answers, focusing on main ideas and organizing thoughts clearly is crucial. This approach suggests that students should provide concise and to-the-point responses while still ensuring they cover the topic adequately. Therefore, option A aligns best with the recommended strategy for answering subjective questions.
It is a well-known fact that it takes the Earth approximately 365 days to orbit the Sun. At the same time, the Earth revolves or spins around itself over the course of 24 hours, which explains why we experience day and night. One half of the Earth is always facing the Sun, while the other half is facing away. As a result, different time zones divide the globe. Moving suddenly from one time zone to another, such as when flying from Asia to North America, can cause jet lag. People often feel tired, wake up suddenly during the night, and cannot return to sleep. It takes time to adjust to a new time zone. Another important factor to consider is the slight tilt of the Earth toward the Sun. The Earth does not stand straight but leans slightly to one side. Therefore, when it revolves around the Sun, the middle part of the Earth is always closer to the Sun and receives more heat. This area is called the equator, and the regions above and below it are known as the tropics. Countries located in the tropics receive a consistent amount of daylight throughout the year, with the Sun rising at 6 AM and setting at 6 PM. In contrast, the tips of the Earth, or the poles, receive hardly any light because they are so far from the Sun. There are two main seasons at the poles: 6 months of summer, when the Sun is always shining (even at night), and 6 months of winter, characterized by constant darkness. Between the tropics and the poles lies the temperate zone, where there are four distinct seasons. The Sun rises and sets at different times throughout the year. In spring and summer, it gets light earlier; in fall and winter, it gets dark earlier. People living in temperate zones take advantage of this variation to maximize their daylight exposure. At the beginning of spring, countries in Europe and North America readjust their clocks by moving them an hour ahead. As a result, the Sun does not set around 7 or 8 PM as usual, but an hour later. This practice is called Daylight Savings Time (DST) and lasts until the beginning of fall, when people move their clocks back one hour to Standard or Regular Time. It is believed that Benjamin Franklin first suggested the introduction of Daylight Savings Time in the 18th century, but the first serious proposal came in 1907 from William Willet. However, his idea was shelved by the British government, which deemed it unnecessary. Daylight Savings Time was first implemented by the German government in 1916 in order to save energy during World War I. Shortly after, the United Kingdom followed suit, with the United States doing the same in 1918. The law was unpopular, as people had to wake up earlier, leading many to experience a feeling similar to jet lag. However, the energy crisis of the 1970s forced the U.S. to establish Daylight Savings Time as law. Studies showed that the introduction of Daylight Savings Time in the spring saved the U.S. 10,000 barrels of oil per day between 1974 and 1975. It also prevented 2,000 traffic injuries and 50 traffic-related deaths, saving the country $28 million. Currently, Americans switch to Daylight Savings Time on the first Sunday in April and revert to Standard Time on the last Sunday in October. As of 2007, the time adjustments occur even earlier in March and November.
What does the sentence ‘It takes time to get used to a new time zone’ mean in paragraph 1?
- A. A flight between Asia and North America takes a long time.
- B. Changing time zones makes people feel tired.
- C. People need time to feel comfortable with a new time zone.
- D. It may take weeks to get used to jetlag.
Correct Answer: B
Rationale: The sentence ‘It takes time to get used to a new time zone.’ in paragraph 1 refers to the fact that changing time zones causes jetlag, making people feel tired, waking up suddenly during the night, and having difficulties sleeping. This adjustment period is needed for the body to adapt to the new time zone.
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