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Read the following passage and mark the letter A, B, C or D on your answer sheet to choose the word or phrase that best fits each other numbered blanks.       Trees protect the soil beneath them; thus, tree loss can affect soil integrity. For example, the rain forest floor, home to numerous plant life as well as insects, worms, reptiles and amphibians, and small mammals, relies on a dense covering of branches and leaves to keep it healthy and intact. The canopy of leaves prevents surface runoff by (4) ________ heavy rainfall, so that water can drip down slowly onto the porous earth. Tree roots also stabilize the soil and help prevent erosion. In return, a healthy soil encourages root development and microbial activity, (5) ________ contribute to tree growth and wellbeing. A major factor in cutting forest -related soil damage comes (6) ________ road building, with trucks and other heavy equipment compressing the soft soil, creating furrows where water collects, and disrupting the underground water flow. Eventually, the topsoil erodes, leaving behind (7) ________ infertile layer of rocks and hard clay.       Logging can also damage aquatic habitats. Vegetation along rivers and stream banks helps maintain a steady water flow by blocking the entry of soil and other residue, and trees shade inhibits the growth of algae. Removing trees (8) ________ these benefits. When eroding soil flows into waterways, the organic matter within it consumes more oxygen, which can lead to oxygen depletion in the water, killing fish and other aquatic wildlife.

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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions (41-45)       The rules of etiquette in American restaurants depend upon a number of factors the physical location of the restaurant, e.g, rural or urban; the type of restaurant, e.g, informal or formal; and certain standards that are more universal. In other words, some standards of etiquette vary significantly while other standards apply almost anywhere. Learning the proper etiquette in a particular type of restaurant in a particular area may sometimes require instruction, but more commonly it simply requires sensitivity and experience. For example, while it is acceptable to read a magazine in a coffee shop, it is inappropriate to do the same in a more luxurious setting. And, if you are eating in a very rustic setting it may be fine to tuck your napkin into your shirt, but if you are in a sophisticated urban restaurant this behavior would demonstrate a lack of manners. It is safe to say, however, that in virtually every restaurant it is unacceptable to indiscriminately throw your food on the floor. The conclusion we can most likely draw from the above is that while the types and locations of restaurants determine etiquette appropriate to them, some rules apply to all restaurants.  The author uses the phrase “safe to say” in order to demonstrate that the idea is ______.

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