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The Water Cycle
Water is needed to sustain practically all life functions on planet Earth. A single drop of this compound is composed of an oxygen atom that shares its electrons with each of the two hydrogen atoms.
The cycle starts when precipitation, such as rain, snow, sleet, or hail, descends from the sky onto the ground. Water that is not absorbed immediately from the precipitation is known as runoff. The runoff flows across the land and collects in groundwater reservoirs, rivers, streams, and oceans.
Evaporation takes place when liquid water changes into water vapor, which is a gas. Water vapor returns to the air from surface water and plants.
Ultimately, condensation happens when this water vapor cools and changes back into droplets of liquid. In fact, the puffy, cotton clouds that we observe are formed by condensation. When the clouds become heavily laden with liquid droplets, precipitation ensues.
What was the authorÄ€™s primary purpose for writing this essay?
- A. To persuade the reader to conserve water
- B. To persuade the reader that runoff is not the best way to collect water
- C. To analyze different types of runoff
- D. To inform the reader about the stages of the water cycle
Correct Answer: D
Rationale: The author's primary purpose for writing the essay is to inform the reader about the stages of the water cycle. The essay discusses the different phases of the water cycle, including precipitation, runoff, evaporation, and condensation. The descriptions provided aim to educate the reader about how water moves through the environment in a continuous cycle, highlighting its importance in sustaining life on Earth. There is no explicit attempt to persuade the reader to conserve water or to argue against runoff as a way to collect water, making these choices incorrect. Choice C is also incorrect as the essay focuses on explaining the stages of the water cycle rather than analyzing different types of runoff.
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Homophones
English is a vibrant, changing, dynamic language. It allows people to express their thoughts in diverse ways, as there are many synonyms and antonyms to choose from. The hardest part for the English speaker - or those learning English as a second language - is learning about homonyms. These are words that sound alike but are spelled different ways, with different meanings.
One example is "One". This word, spelled "one" means the numeral 1, an amount. If spelled "won," it means to be victorious. No wonder spelling is a difficult skill to master! Other homonyms encountered by the beginning English speaker are "to, two, too," "four, for, fore," "there, their, they're" and "son, sun" to name just a few. This is one reason that "Spell check" programs on word processing computers cannot be completely accurate, because the way a word is spelled depends on the context of the sentence. Proofreaders will always be in demand.
How does the article define homonyms?
- A. Words that have the same spelling but different meanings
- B. Words that sound alike but have different meanings and spellings
- C. Words that have opposite meanings
- D. Words that are spelled the same but pronounced differently
Correct Answer: B
Rationale: The article defines homonyms as words that sound alike but have different meanings and spellings. This definition is accurate because homonyms are words that are pronounced similarly but have different meanings and may also have different spellings. Examples provided in the text, such as 'one' and 'won,' demonstrate this concept. Therefore, the correct answer is B.
Subjective exams measure your ability in several areas. Besides recall information, you must be
able to realize content logically and intelligently express yourself in a clearly understood manner. Subjective test provide opportunity for students to show their broad knowledge of a subjective
area. Answers may be in the form of paragraphs or lengthy essays. When your review for an essay exam, concentrate on main ideas rather than details. Since essay tests are less to a few questions, they are likely to deal with more important ideas of a subject. Prepare a list of question you think might be asked. Write an answer to each of your questions. Rather than writing complete sentence 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, spending more time for questions worth the most points. Read each question carefully to determine exactly what they are asked. Pay attention to words such as define, illustrate, explain, list, compare, and contrast. Each work requires a different type of response. Write a brief outline of your answer on scrap paper or the back of the test. Make sure you include all the important ideas that are within the limits of the question. In other words, do not write more than is asked for each answer. When you write your answer, keep it specific and as brief as possible. In the introductory sentence it is often helpful to make a general statement that includes
important points addressed in each question. Such a topic sentence serves as a framework for your answer. Then use your outline to develop the main point and subtopics. Add substance to
your answer by including as many facts as possible to support your answer.
Check your paper before you submit it. Look for mistakes in grammar, spelling, sentence
structure, and punctuation. Unless you are certain an answer is wrong, do not change it. Your answer is an educated guess and is usually your best chance of answering correctly
When answering subjective questions, the student should:
- A. Include more than is asked
- B. Keep it brief and specific
- C. Write out the words 'true' or 'false'
- D. Capitalize the matching letters
Correct Answer: B
Rationale: When answering subjective questions, it is essential for students to keep their responses brief and specific. This approach helps students focus on the main ideas rather than getting bogged down in unnecessary details. By being concise and to the point, students can effectively convey their understanding of the subject matter without going off track. Additionally, providing a clear and concise response ensures that the student addresses the question directly and does not include irrelevant information, which can lead to a loss of points in subjective assessments.
A BIT ABOUT BICYCLES
Today, bicycles are so common that it's hard to believe they haven't always been around. But two hundred years ago, bicycles didn't even exist, and the first bicycle, invented in Germany in 1818, was nothing like our bicycles today. It was made of wood and didn't even have pedals. Since then, however, numerous innovations and improvements in design have made the bicycle one of the most popular means of recreation and transportation around the world. In 1839, Kirkpatrick Macmillan, a Scottish blacksmith, dramatically improved upon the original bicycle design. Macmillan's machine had tires with iron rims to keep them from getting worn down. He also used foot-operated cranks like pedals, so his bicycle could be ridden at a quick pace. It didn't look much like a modern bicycle, though, because its back wheel was substantially larger than its front wheel. In 1861, the French Michaux brothers took the evolution of the bicycle a step further by inventing an improved crank mechanism. Ten years later, James Starley, an English inventor, revolutionized bicycle design. He made the front wheel many times larger than the back wheel, put a gear on the pedals to make the bicycle more efficient, and lightened the wheels by using wire spokes. Although this bicycle was much lighter and less tiring to ride, it was still clumsy, extremely top heavy, and ridden mostly for entertainment. It wasn't until 1874 that the first truly modern bicycle appeared on the scene. (14) Invented by another Englishman, H.J. Lawson, the "safety bicycle" would look familiar to today's cyclists. This bicycle had equal-sized wheels, which made it less prone to toppling over. Lawson also attached a chain to the pedals to drive the rear wheel. With these improvements, the bicycle became extremely popular and useful for transportation. Today they are built, used, and enjoyed all over the world.
What does 'taste' mean?
- A. Perceiving a sensation on the tongue
- B. A sensation in the tongue
- C. A liking
- D. Ability to enjoy what is beautiful and harmonious
Correct Answer: A
Rationale: The term 'taste' in this context refers to the action of perceiving a sensation on the tongue. When discussing taste in the context of sensory perception, it is related to the sense of taste that allows us to discern flavors. Option A, 'Perceiving a sensation on the tongue,' accurately defines the term in the given context. Options B, C, and D are not relevant to the specific meaning of 'taste' being referred to in this question.
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.
What statement is implied by the paragraph?
- A. Much needed pasture and farmland can be obtained by clearing the land.
- B. People should leave the rainforest alone to evolve.
- C. Deforestation has long-term consequences we still do not know about.
- D. Deforestation of the Amazon rainforest is a consequence of progress.
Correct Answer: C
Rationale: The correct answer is C: Deforestation has long-term consequences we still do not know about.
Rationale:
1. The paragraph discusses the destruction of the Amazon rainforest and highlights the long-term implications of deforestation.
2. It mentions the loss of habitat for creatures leading to extinction and the depletion of oxygen causing global warming.
3. The statement implies that there are ongoing and potentially unknown consequences of deforestation.
4. Choice A is incorrect as it focuses on the immediate benefits of clearing land for pasture, ignoring the long-term consequences discussed.
5. Choice B is too simplistic and does not address the complexity of the issue as presented in the paragraph.
6. Choice D is also incorrect as it oversimplifies the issue by associating deforestation solely with progress without considering the negative impacts discussed.
Electrocardiogram
The rhythmic sounds of "beep... beep... beep..." signify the measurement of the heart muscle's strength. This rhythmic signal varies from person to person and is recorded as an electrocardiogram (ECG). Within the body, a complex array of systemic neural responses generates electric currents that can be detected on the skin's surface. When a person is connected to an amplifier, these impulses are captured by an electrocardiograph. Most of the information gathered pertains to the heart, as it emits electric currents in waves. This "wave of excitation" propagates through the heart wall and is associated with electrical changes. The process occurs in three distinct phases. First, the "wave of excitation," accompanied by an electrical change, lasts for about 1 to 2 seconds following the contraction of the cardiac muscle. These electrical impulses are rhythmically discharged from the sinoatrial (SA) node, which acts as the heart's natural pacemaker, signaling the atrium to contract. The peak of the ECG reading is attributed to the atrioventricular (AV) node, which triggers the excitation of the ventricles. Finally, as the ventricles relax, any changes in the wave pattern can alert trained medical personnel to potential abnormalities within the heart.
What is the best summary of the passage?
- A. Electric currents within the body are due to electrostatic charges set off by the heart. Medical staff are trained to recognize any abnormalities within the heart.
- B. Every individual has unique electric currents on the surface of the body. The ECG measures and records these electric currents.
- C. The ECG systematically and rather quickly measures the stages at which the "wave of excitation" occurs within the heart and records them. This wave has three distinct steps that spread from the SA node to the AV node.
- D. The ECG measures the electric currents within the body. These currents are detected on the surface of the body when the body is connected to an amplifier.
Correct Answer: C
Rationale: The correct answer is C because it accurately summarizes the passage by highlighting that the ECG systematically measures the stages of the 'wave of excitation' within the heart. This wave has three distinct steps that spread from the SA node to the AV node. The other options either focus on general information about electric currents or do not capture the specific details provided in the passage about the ECG and the heart's electrical activity.