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题目材料:
In Gilavia, the number of reported workplace injuries has declined 16 percent in the last five years. However, perhaps part of the decline results from injuries going unreported: many employers have introduced safety-incentive programs, such as prize drawings for which only employees who have a perfect work-safety record are eligible. Since a workplace injury would disqualify an employee from such programs, some employees might be concealing injury, when it is feasible to do so.
Which of the following, if true, most helps to resolve the status of the orbiting body without casting doubt on the two standard theories mentioned?
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AThe smaller a planet orbiting a star is, and the farther away it is from the star, the less likely it is to be discovered.
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BIf a planet's orbit is disturbed, the planet can be drawn by gravity toward the star it is orbiting.
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CThe largest of the bodies orbiting Upsilon Andromedae is the farthest away from the star, and the smallest is the nearest.
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DIt is likely that there are many stars, in addition to Upsilon Andromedae and the Sun, that are orbited by more than one smaller body.
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EIn most cases of companion stars, the smaller companion is much fainter than the larger star.
B显示答案