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In an attempt to genetically engineer a coffee plant that would produce beans containing no caffeine, Scientists prevented the production of an enzyme necessary for the synthesis of caffeine. Beans harvested from plants in which production of the enzyme was shut down throughout the plant contained no caffeine. However, there were normal amounts of caffeine in beans harvested from plants in which production of the enzyme was shut down in beans but not in the rest of the plant. If the information presented above is accurate, which of the following hypothesis is most strongly supported on the basis of it? (A) Measurable amounts of caffeine are present in the leaves of a coffee plants in which production of the enzyme has been completely stopped. (B) Caffeine production in coffee plants does not require the action of more than one enzyme. (C) Coffee made from the beans of the plants in which enzyme production was shut down only in the beans contains both caffeine and small quantities of the enzyme. (D) In coffee plants, either caffeine or the enzyme necessary for the production of caffeine move into the beans from elsewhere in the plant. (E) When the production of the enzyme is shut down in the beans but not in the rest of the coffee plant, the quantities of the enzyme produced in the rest of the plant are smaller than usual.
AdadisCo needs to increase its annual production of sweatshirts. To do so, it must either hire new employees or else ask its currents workforce to work more overtime. When working overtime, employees are paid one and one-half times their normal hourly wage. On the other hand, newly hired workers, although they would not be paid quite as much per hour as AdadisCo’s experienced employees, would produce far less per hour than its current workers do. Which of the following is most strongly supported by information given? A Any new workers that AdadisCo hires would be trained by experienced current employees. B AdadisCo cannot increase its production without experiencing at least a short-term increase in the average cost of labor per sweetshirt produced. C If AdadisCo increases its annual production of sweatshirts, the quality of sweatshirts produced would decline. D Not all of the employees in AdadisCo’s current workforce would be willing to work more overtime if asked to do so. E Unless AdadisCo asks its current workforce to work more overtime, its annual production will fall.
参考答案：DB
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发表于 2021-9-21 22:05:30
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