Tiêu đề CLASS 9-HW.pdf ✅

140 CLASS 9 Homework HOMEWORK MUST be completed before Class 10 Question 1 is based on the following reading passage. The average temperature of the lobster-rich waters off the coast of Foerkland has been increasing for some years. In warmer water, lobsters grow faster. In particular, lobster larvae take less time to reach the size at which they are no longer vulnerable to predation by young cod, the chief threat to their survival. Consequently, the survival rate of lobster larvae must be going up, and the lobster population in Foerkland’s coastal waters is bound to increase. 1. Which of the following, if true, most seriously weakens the argument? There are indications that in recent years the fishing fleet operating off the coast of Foerkland has been taking cod at an unsustainably high rate. The increase in water temperatures off Foerkland has not been as pronounced as the increase in average soil temperatures in Foerkland. Because of their speeded-up growth, lobsters now get large enough to be legal catch before they reach reproductive maturity. Even though lobsters grow faster in warmer waters, warmer waters have no effect on the maximum size to which a lobster can eventually grow. Cod are a cold-water species, and the increasing water temperatures have caused a northward shift in Foerkland’s cod population. Questions 2 and 3 are based on this passage. In humans, the pilomotor reflex leads to the response commonly known as goose bumps, and this response is widely considered to be vestigial—that is, something Line formerly having a greater physiological advantage than 5 10 15 at present. It occurs when the tiny muscle at the base of a hair follicle contracts, pulling the hair upright. In animals with feathers, fur, or quills, this creates a layer of insulating warm air or a reason for predators to think twice before attacking. But human hair is too puny to serve these functions. Goose bumps in humans may, however, have acquired a new role. Like flushing— another thermoregulatory (heat-regulating) mechanism— goose bumps have become linked with emotional responses, notably fear, rage, or the pleasure of, say, listening to beautiful music. They may thus serve as a signal to others. 2. In explaining the “new role” (line 11) that goose bumps in humans may have acquired, the author assumes which of the following? Emotional responses in humans can be triggered by thermoregulatory mechanisms. The perceptibility of emotional responses to other humans offers some kind of benefit. If human hair were more substantial, goose bumps would not have acquired a new role. Goose bumps in animals with feathers, fur, or quills may also be linked to emotional responses. In humans, goose bumps represent an older physiological response than flushing. 3. Which of the following best describes the primary function of the next-to-last sentence (“Like . . . music”)? It makes a distinction between two types of mechanisms. It corrects a common misconception about the role of goose bumps in humans. It suggests reasons for the connection between emotional responses and goose bumps in humans. It suggests that flushing and goose bumps signal the same emotional state. It helps explain a possible role played by goose bumps in humans. 4. Parkin’s characterization of the movement as neoscholastic is too _______ to be accepted without further investigation. cursory detailed perfunctory biased self-evident complete
141 CLASS 9 Homework 5. A recent study suggests that vitamin E supplements, despite widespread belief in their _______, are no better than sugar pills for delaying the onset of the degenerative disease. potential misuse popularity efficacy prevalence usefulness 6. Despite her relaxed and flexible style, Ms. de la Fressange is ______ businesswoman who knows how to market her brand: herself. a ruthless a creative a canny an industrious a shrewd an effective 7. The incipient (i)________ regarding taxes could affect trade between the two countries much more than the (ii)________ banana imports, which has been going on for years. Unfortunately, the trade regulators seem to be ignoring both disagreements. Blank (i) Blank (ii) row profitable dealing in accord predicament regarding investigation festering dispute over Question 8 is based on the following reading passage. Saturn’s giant moon Titan is the only planetary satellite with a significant atmosphere and the only body in the solar system other than Earth that has a thick atmosphere dominated by molecular nitrogen. For a long time, the big question about Titan’s atmosphere was how it could be so thick, given that Jupiter’s moons Ganymede and Callisto, which are the same size as Titan, have none. The conditions for acquiring and retaining a thick nitrogen atmosphere are now readily understood. The low temperature of the protosaturnian nebula enabled Titan to acquire the moderately volatile compounds methane and ammonia (later converted to nitrogen) in addition to water. The higher temperatures of Jupiter’s moons, which were closer to the Sun, prevented them from acquiring such an atmosphere. 8. According to the passage, Titan differs atmospherically from Ganymede and Callisto because of a difference in rate of heat loss proximity to the Sun availability of methane and ammonia distance from its planet size Question 9 is based on the following reading passage. Observations of the Arctic reveal that the Arctic Ocean is covered by less ice each summer than the previous summer. If this warming trend continues, within 50 years the Arctic Ocean will be ice free during the summer months. This occurrence would in itself have little or no effect on global sea levels, since the melting of ice floating in water does not affect the water level. However, serious consequences to sea levels would eventually result, because __________.
142 CLASS 9 Homework 9. Which of the following most logically completes the passage? large masses of floating sea ice would continue to form in the wintertime significant changes in Arctic sea temperatures would be accompanied by changes in sea temperatures in more temperate parts of the world such a warm Arctic Ocean would trigger the melting of massive land-based glaciers in the Arctic an ice-free Arctic Ocean would support a very different ecosystem than it does presently in the spring, melting sea ice would cause more icebergs to be created and to drift south into shipping routes 10. Although plant and animal species that become established in ecosystems where they did not originate are sometimes referred to by the alarming term “invasive species,” many such species are ________ in their new environments. innocuous conspicuous robust menacing distinctive 11. The government has no choice but to (i)________ the incessant demands for land reform, and yet any governmental action that initiated land reform without requisite attention to agrarian reform would (ii)________ the overall goal of economic modernization. Blank (i) Blank (ii) anticipate delineate heed condone silence compromise 12. Even the charisma and technical prowess of two fine actors are not ________ the task of fully invigorating a gray domestic drama with a tired tale to tell. required for interested in preferred for adequate to inferior to 13. Repression of painful memories is sometimes called willed forgetting.” Yet true forgetting is (i)________ than the phenomenon of repressed memory. In spite of the effort that it (ii)________, repressing unwanted memories is less (iii) ________ than truly forgetting them, for repressed memories are prone to come back. Blank (i) Blank (ii) less controlled eases permanent different in its effect conveys arduous far more common entails immediate Blank (iii) Questions 14 and 15 are based on the following reading passage. Arctic sea ice comes in two varieties. Seasonal ice forms in winter and then melts in summer, while perennial ice persists year-round. To the untrained eye, Line all sea ice looks similar, but by licking it, one can 5 estimate how long a particular piece has been floating around. When ice begins to form in seawater, it forces out salt, which has no place in the crystal structure. As the ice gets thicker, the rejected salt collects in tiny pockets of brine too highly concentrated to freeze. A 10 piece of first-year ice will taste salty. Eventually, if the ice survives, these pockets of brine drain out through fine, veinlike channels, and the ice becomes fresher; multiyear ice can even be melted and drunk.