Which statement is true about greenhouses?
- A. Greenhouses create tropical conditions at nurseries.
- B. Greenhouses are only used for growing rare plants.
- C. Greenhouses are a waste of resources and are never used in nurseries.
- D. Greenhouses make all plants grow faster without any exceptions.
Correct Answer: A
Rationale: Greenhouses are designed to create a controlled environment that mimics tropical conditions, providing warmth and humidity suitable for plant growth. This makes them essential in nurseries for cultivating a wide range of plants, not just rare ones. Greenhouses are valuable resources that offer various benefits in agriculture and horticulture by extending growing seasons and protecting plants from harsh environmental conditions.
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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.
What conclusion can be drawn from the article?
- A. In order to master English, the student must learn about homonyms.
- B. Learning homonyms is optional for mastering English.
- C. Mastering English requires avoiding homonyms.
- D. Homonyms are not important for learning English.
Correct Answer: A
Rationale: The correct answer is A: 'In order to master English, the student must learn about homonyms.' The article clearly emphasizes the importance of learning about homonyms, which are words that sound alike but are spelled differently and have different meanings. Understanding homonyms is crucial for mastering English, as they can significantly impact the meaning of sentences. Therefore, to become proficient in English, one must grasp the distinctions between homonyms to communicate effectively and avoid misunderstandings.
The Summer Olympic Games. Once every four years the countries of the world send their best and brightest to participate in the Summer Olympic Games. The site for the event is decided years before, and most countries contend strongly for the privilege to host the Games. The 2008 games were held in Bejing, China.
There is a lot of pageantry and tradition attached to the event. The opening ceremony is elaborate and awe-inspiring. China put on a spectacularly beautiful fireworks display to welcome the world's athletes in 2008.
The track events, water events (swimming, diving) and precision activities such as archery and rhythmic gymnastics are wonderful to watch. Seeing these athletes perform their special skills is a treat for those of us who achieve a vicarious satisfaction from it. Everyone roots for the athletes from their own country and we thrill when our anther is played during the medal ceremony. Being an Olympian is an honor every athlete dreams of.
How often are the Summer Olympic Games held?
- A. Every two years.
- B. Every four years.
- C. Annually.
- D. Once a decade.
Correct Answer: B
Rationale: The Summer Olympic Games are held 'once every four years,' as stated in the text. This timeframe allows countries to send their best athletes to participate. The correct answer is B, 'Every four years,' making it a significant and eagerly anticipated global event. The four-year interval also allows for ample time for countries to prepare, build excitement, and showcase their best talents on a world stage.
People of Hispanic origin were on the North American continent centuries before settlers arrived
from Europe in the early 1600s and the thirteen colonies joined together to form the United
States in the late 1700s. The first census of the new nation was conducted in 1790, and counted about four million people, most of whom were white. Of the white citizens, more than 80%
traced their ancestry back to England. There were close to 700,000 slaves and about 60,000 "free Negroes". Only a few Native American Indians who paid taxes were included in the census count, but the total Native American population was probably about one million. By 1815, the population of the United States was 8.4 million. Over the next 100 years, the
country took in about 35 million immigrants, with the greatest numbers coming in the late 1800s and early 1900s. In 1882, 40,000 Chinese arrived, and between 1900 and 1907, there were more
than 30,000 Japanese immigrants. But by far, the largest numbers of the new immigrants were
from central, eastern, and southern Europe. An enormous amount of racial and ethnic assimilation has taken place in the United States. In 1908, play-write Israel Zangwill first used the term "melting pot" to describe the concept of a place where many races melted in a crucible and re-formed to populate a new land. Some years during the first two decades of the 20th century, there were as many as one million new
immigrants per year, an astonishing 1 percent of the total population of the United States.
In 1921, however, the country began to limit immigration, and the Immigration Act of 1924
virtually closed the door. The total number of immigrants admitted per year dropped from as many as a million to only 150,000. A quota system was established that specified the number of
immigrants that could come from each country. It heavily favored immigrants from northern and western Europe and severely limited everyone else. This system remained in effect until 1965, although after World War II, several exceptions were made to the quota system to allow in
groups of refugees
According to the passage, which ancestry predominated at the time of the first census?
- A. Native Americans
- B. Negroes
- C. English
- D. Hispanic
Correct Answer: C
Rationale: At the time of the first census in 1790, the passage states that more than 80% of the white citizens traced their ancestry back to England. This indicates that English ancestry predominated at that time. The passage also mentions the presence of Native Americans, Negroes, and immigrants from various other regions, but in terms of predominant ancestry, it was the English.
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 can be inferred about Daylight Savings Time?
- A. It will be modified starting in 2007.
- B. It will be canceled right after the end of 2007.
- C. It will be replaced with Standard Time in March 2007.
- D. It will be adjusted shortly before the start of 2007.
Correct Answer: A
Rationale: The correct answer is A: "It will be modified starting in 2007." The passage mentions that as of 2007, the time readjustment for Daylight Savings Time will happen even earlier, in March and November. This implies that there will be modifications to the timing of Daylight Savings Time starting in 2007, aligning with the information provided in the passage about the changes in the timing of Daylight Savings Time adjustments.
Blood Pressure Lub-dub! Lub-dub! Lub-dub! This sound is made by the rapid contracting and extending of the chamber doors on the inside of the heart. This ventricular contracting injects roughly 70 mL of blood into a vascular system with a given volume at differing pressure. Blood pressure refers to the pressure in the arterial system; and it is typically taken in the brachial artery of the arm because the pressure at different places along the circulatory route is different. Blood pressure is simply the force that the blood exerts in all directions within any given area and is the basis for the movement of blood from the heart, through the body, and back to the heart. This pressure is commonly expressed as a ratio of the systolic pressure over the diastolic pressure. The systolic pressure or “high peak†pressure takes place within the arterial system as ventricles contract and force blood into the arteries. The diastolic pressure or “low peak†pressure takes place within this arterial system just before the next ventricular contraction. An increase in blood pressure can occur if the arterial walls lose some of their elasticity with age or disease.
Which of the following is not a fact stated in the passage?
- A. Ventricular contracting injects roughly 70 mL of blood into a vascular system.
- B. Blood pressure is typically measured in the brachial artery of the arm.
- C. Blood pressure is commonly expressed as a ratio of the systolic pressure over the diastolic pressure.
- D. Loss of arterial wall elasticity is always caused by disease.
Correct Answer: D
Rationale: The correct answer is D. The passage does not state that loss of arterial wall elasticity is always caused by disease. It mentions that an increase in blood pressure can occur if the arterial walls lose some elasticity with age or disease, implying that the loss of elasticity can also be age-related. The other statements are all directly supported by the passage: A discusses the volume of blood injected by ventricular contraction, B explains where blood pressure is typically measured, and C describes how blood pressure is commonly expressed as a ratio of systolic over diastolic pressure.
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