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4000 Bài tập tiếng Anh chọn lọc theo dạng & phân loại theo mức độ (có lời giải chi tiết)

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Nơi bồi dưỡng kiến thức Toán - Lý - Hóa cho học sinh cấp 2+3 /<br />

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African rat uses its quill-like hairs to deliver poison to them. When a predator comes after it, instead of<br />

running away, the rat stays put and parts its hair to reveal the strip of fur on its back where the poison is<br />

being stored. That raised strip is the first thing that receives a bite, and the poison inside disables the<br />

predator. These hair tubes are unusual. In fact, scientists do not know of another animal that uses plant<br />

poison in this way.<br />

Scientists are puzzled that the rat doesn't appear to be affected by the poison. Because it affects<br />

heartbeat regulation, understanding how the rat can keep its heart rate regulated effectively while using<br />

the poison could help scientists develop new medicines for people with heart trouble. And they hope that<br />

those suffering from heart diseases will benefit from this.<br />

Question 30: What is the main purpose of the passage?<br />

A. To show how animals can affect plant life.<br />

B. To compare one animal to other similar ones.<br />

C. To emphasize the dangers of resear<strong>chi</strong>ng animals.<br />

D. To discuss an unusual animal defense technique.<br />

Question 31: In paragraph 1, why does the author mention the platypus?<br />

A. To illustrate that mammals may eat poisonous plants.<br />

B. To give an example of a mammal that uses poison.<br />

C. To show how it differs from the crested rat.<br />

D. To explain that the platypus is at risk.<br />

Question 32: The word “paralyzed” in paragraph 1 is closest in meaning to<br />

A. disabled B. unaffected C. inaccessible D. undecided<br />

Question 33: In paragraph 2, what does the word “them” refer to?<br />

A. predators B. porcupines C. crested rats D. quill-like hairs<br />

Question 34: The word “defends” in paragraph 2 is closest in meaning to<br />

A. encourages B. protects C. feeds D. pretends<br />

Question 35: What are scientists surprised by?<br />

A. How toxic plant poison can be. B. How useful plant toxins can be.<br />

C. How quickly rats learn new behavior. D. That the rats are protected from the poison.<br />

Question 36: What would scientists like to investigate further?<br />

A. Medicine used to counteract poison. B. Other animals like the crested rat.<br />

C. Health effects of a chemical. D. Rats with unhealthy hearts.<br />

Exercise 6. Read the following passage and mark the letter A, B, C, or D on your answer sheet to<br />

indicate the correct answer to each of the questions.<br />

The end of the nineteenth century and the early years of the twentieth century were marked by the<br />

development of an international Art Nouveau style, characterized by sinuous lines, floral and vegetable<br />

motifs, and soft evanescent coloration. The Art Nouveau style was an eclectic one, bringing together<br />

elements of Japanese art, motifs of ancient cultures, and natural forms. The glass objects of this style were<br />

elegant in outline, although often deliberately distorted, with pale or iridescent surfaces. A favored device<br />

of the style was to imitate the iridescent surface seen on ancient glass that had been buried. Much of the<br />

Art Nouveau glass produced during the years of its greatest popularity had been generically termed “art<br />

glass.” Art glass was intended for decorative purposes and relied for its effect on carefully chosen color<br />

combinations and innovative techniques.<br />

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6<br />

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