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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 following questions.
These stories of killer bees in the news in recent years have attracted a lot of attention as the bees have made their way from South America to North America. Killer bees are reputed to be extremely aggressive in nature, although experts say that their aggression may have been somewhat inflated. The killer bee is a hybrid- or combination- of the very mild European strain of honeybee and the considerably more aggressive African bee, which was created when the African strain was imported into Brazil in 1955. The African bees were brought into Brazil because their aggression was considered an advantage: they were far more productive than their European counterparts in that they spent a higher percentage of their time working and continued working longer in inclement weather than did the European bees. These killer bees have been known to attack humans and animals, and some fatalities have occurred. Experts point out, however, that the mixed breed known as the killer bee is actually not at all as aggressive as the pure African bee. They also point out that the attacks have a chemical cause. A killer bee stings only when it has been disturbed; it is not aggressive by nature. However, after a disturbed bee stings and flies away; it leaves its stinger embedded in the victim. In the viscera attached to the embedded stinger is the chemical isoamyl acetate, which has an odor that attracts other bees. As other bees approach the victim of the original sting, the victim tends to panic, thus disturbing other bees and causing them to sting. The new stings create more of the chemical isoamylacetate which attracts more bees and increases the panic level of the victim. Killer bees tend to travel in large clusters or swarms and thus respond in large numbers to the production of isoamyl acetate.
The subject of the preceding paragraph was most likely
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks
Are you a fan of the popular logical puzzle that (1) _____ by the name Sudoku? Even if you’re not, the chances are you know somebody who is. Once (2) _______ known outside Japan, this addictive brain teaser has become a common feature of newspaper puzzle pages all over the world.Sudoku’s great success (3) ______ much to its simplicity. The game (4) _______ for neither mathematical ability nor (5) ________ knowledge and there are just a few sentences of straightforward instructions to read before you can play. The only skill required is the ability to recognize the difference between nine different symbols, and these don’t even have to be numbers.Some clever marketing has helped the game. Western newspapers worked hard at promoting the game. Without this, it is unlikely that it would have (6) ______ off and become quite such a runaway success. The same also (7) ______ from its Japanese name that made people in many parts of the world (8) ______. It as a superior kind of puzzle compared to those you usually find in newspapers and magazines. But the popularity of Sudoku reached a peak in 2006, if the number of (9) ______ on one leading website is anything to go by. Newspapers responded by (10) ______ up with new kinds of logical puzzles, all with simple rules and Japanese names. But for true Sudoku fans, only the real thing will do.