Read the following passage and choose the letter A, B, C or D to answer the comprehension questions

Are organically grown foods the best food choices? The advantages claimed for such foods over conventionally grown and marketed food products are now being debated. Advocates of organic foods - a term whose meaning varies greatly - frequently proclaim that such products are safer and more nutritious than others.

The growing interest of consumers in the safety and nutritional quality of the typical North American diet is a welcome development. However, much of this interest has been sparked by sweeping claims that the food supply is unsafe or inadequate in meeting nutritional needs. Although most of these claims are not supported by scientific evidence, the preponderance of written material advancing such claims makes it difficult for the general public to separate fact from fiction. As a result, claims that eating a diet consisting entirely of organically grown foods prevents or cures disease or provides other benefits to health have become widely publicized and form the basis for folklore.

Almost daily the public is besieged by claims for “no-aging” diets, new vitamins, and other wonder foods. There are numerous unsubstantiated reports that natural vitamins are superior to synthetic ones, that fertilized eggs are nutritionally superior to unfertilized eggs, that untreated grains are better than fumigated grains, and the like.

One thing that most organically grown food products seem to have in common is that they cost more than conventionally grown foods. But in many cases consumers are misled if they believe organic foods can maintain health and provide better nutritional quality than conventionally grown foods. So there is real cause for concern if consumers, particularly those with limited incomes, distrust the regular food supply and buy only expensive organic foods instead.

The word “those” stands for ______?

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She has worked as a secretary ________ she graduated from college.

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Mr. Pike would scarcely keep track of his business by cell phone when he was in his one-month traveling, ______?

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Every means ______ tried but without much result.

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All the children have gone ________ mumps.

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Most bacteria have strong cell walls much like that of plants.

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Some major causes of ocean pollution include oil spills, toxic waste and hazardous materials _____ into the ocean.

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“How would you like your coffee?” – “______.”

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I wanted to prove to my family that I could make something of myself.

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Jack was wearing blue jeans and a torn T-shirt, while all other guests had on formal dinner wear. He really _______.

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The students have to sift through all the journals in the library to find the information their professor want them to find.

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After months of searching I finally _____ to land a job as an accountant in an insurance company.

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Pokémon Go is ______ this season’s hit game. But we’re just over a month out, so it’s too soon to know exactly how Pokémon Go is faring in the longer term.

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The influence of the nation’s literature, art, and science have captured widespread attention.

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The sandwich was bought a week ago; I don’t think it is ______ now.

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In just four short years, his company has made phenomenal progress in delivering great market success.