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The food that is brought on a shuttle mission can be dehydrated, in natural (4) _________ for fresh.
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On that day, the menu is (3) _______ and the astronaut eats the meals he had on the first day.
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There is a special plan for the astronaut on (2) _______ a spaceship which includes beverages and food items.
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It is, however, rather challenging as the water droplets will (1) _________ around.
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This extreme (5) ____ continually breaks rocks away from the surface of the mountains.
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If you step out of the mountain shadows, it will (4) ____ moving from severe cold into great heat.
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There is no variety of scenery (3) ____ . For mile after mile there are only flat plains of dust with mountains around them.
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As there is no air or water, there can be no (2) ____ of any kind.
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Science has told us so (1) ____ about the Moon that it is fairly easy to imagine what it would be like to go there.
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The word ’it’ in the last paragraph refers to ____. A. google B. the fact that Google becomes so well-liked C. the great search result D. the product of Google
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Which was cited as a reason why Google became so popular? A. Google’s homepage was clean. B. Google provided catchy news stories on their homepage. C. Google homepage loaded quickly. D. G
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How did Google improve search quality in 1998? A. They counted how many times queries appeared on each page. B. They looked more closely at the words in search queries. C. They linked to m
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Which best explains why the author discusses Xerox in this text? A. He is discussing big companies that came before Google. B. He is explaining how companies must change with the times. C.
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Which statement would the author most likely agree with? A. Google became successful because its founders were well-connected. B. Google was the world’s first and best search engine. C. Go
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Which best expresses the main idea of the third paragraph? A. There are lots and lots of websites connected to the internet. B. Google created a better way to organize search results. C. M
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Which statement does the author NOT mention in the passage? A. Part of Google’s success is due to the design of their homepage. B. Google succeeded by following examples of others in their

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Which title best expresses the author’s main purpose in writing this text? A. Xerox Vs. Google: Battle of the Titans B. Search Engines: How They Work and Why They’re Important C. A Better

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Which of the following could best describe the tone of the passage? A. Informative B. Argumentative C. Sarcastic D. Ironic
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Which of the following is NOT correct about the impact of Facebook on users’ relationship? A. More than half of single people tend to make new friends on Facebook after a face-to-face contac
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The word “courting” in the last paragraph is closest in meaning to __________. A. dating B. marriage C. divorce D. making acquaintance
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Why does Facebook motivate the productivity of employees? A. Because the Internet distracts users to take breaks out of work. B. Because it helps people refresh their mind and then enhance

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The word “one” in paragraph 3 refers to __________. A. the study B. a group C. the Internet D. a research
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According to paragraph 2, what do the scientists discover in their study? A. Spending too much time on Facebook may increase levels of pressure and heart disease. B. Students often suffer f
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The word “sparked” in the second paragraph probably means ____________. A. produced B. reduced C. prevented D. controlled
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Which of the following could be the main idea of the passage? A. The benefits that Facebook might bring you. B. The disadvantages that Facebook causes in the modern life. C. The classes ar
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Which of the following most accurately reflects the main idea of the last paragraph? A. The time when photoflash was first used. B. How metal burns in an atmosphere of pure oxygen. C. How

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According to the passage, what helps a flashbulb burn longer? A. thicker wire B. more oxygen C. thinner glass D. continuous electricity
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The word “momentarily” in paragraph 2 is closet in meaning to __________ . A. effortlessly B. briefly C. electronically D. gradually
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The word “it” in paragraph 2 refers to __________ . A. oxygen B. battery C. wire D. current
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Which of the following is TRUE about the function of the glass in the first flashbulbs? A. It produced the spark that initiated the flash. B. It magnified the light produced by the flash.

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The word “ignited” in paragraph 1 is closest in meaning to __________. A. set on fire B. cut into C. opened D. shaken
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According to the passage, an advantage of using a photoflash is that it ______. A. can produce repeated bursts of light B. intensities colors in photographs C. is short enough not to bother
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What is the best title for the passage? A. The history of the photoflash B. Theories about how the eye reacts to light C. The technology of modern photography D. The dangers of using the ea
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Which of the following can be inferred from the passage? A. Many legal issues concerning 3-D printing like accountability and intellectual property rights need clarifying. B. The medical in
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Which of the following statements is TRUE, according to the passage? A. The data on the construction of medical devices are currently available and accessible. B. Brute Kline is a certifica
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According to paragraph 3, what is NOT one of the changes the AM technology introduces to hospital? A. It turns the hospital into a self-subsistent provider of medical devices without the aid
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The word “liable” in paragraph 3 is closest in meaning to _______. A. faulty B. responsible C. susceptible D. predisposed
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The word “it” in paragraph 2 refers to _____. A. law B. disease C. device D. vendor
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According to paragraph 1, in what situation do people violate the patent law? A. An organisation employ the device files after duly buying them. B. An unauthorised person resells the medica
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The word “enforce” in paragraph 4 is closest in meaning to _______. A. impose B. demand C. fulfill D. coerce
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What is the main topic of the passage? A. Proposed FDA guidance for 3-D printing. B. 3-D printing of biological tissue implants. C. Early experience of printing implantable devices. D. Le
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Which of the following can be inferred from the passage? A. Li-Fi offers a safer, faster and more efficient solution to optimise connection with the world. B. Li-Fi is a great improvement c
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Which of the following statements is TRUE, according to the passage? A. Li-Fi cannot possibly function in the radio frequency’s range. B. The term Li-Fi was coined by University of Edinburg
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According to paragraph 4, which is NOT the drawback of Li-Fi? A. Walls can essentially hinder the transmission of light, thus Li-Fi. B. To ensure constant connectivity, light bulbs should b
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The word “It” in paragraph 2 refers to _____. A. Connection B. Light bulb C. Data D. Li-Fi
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The word “accommodates” in paragraph 3 is closest in meaning to _______. A. fits B. helps C. adapts D. satisfies
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According to paragraph 3, what form does the transferred data from Li-Fi system take? A. The data is converted into electromagnetic radiation before being sent off. B. The data initially is
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The word “boasting” in paragraph 2 is closest in meaning to _______. A. looting B. possessing C. exaggerating D. appreciating
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Which best serves as the title for the passage? A. Wireless connection opens up a new world. B. Everything you need to know about Li-Fi. C. The technological waves are sweeping through. D
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Which of the following is implied in the last paragraph? A. The first telephone was not suitable for practical purposes. B. Telephone couldn’t be designed for large-scale production. C. Th
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