A. contains plenty of nutrients B. renders foods calorie-free while retaining their vitamins C. makes foods easily digestible D. makes foods fat-free while keeping them delicious 22. The result of the search for an ly digestible fat turned out to A. commercially useless B. just as anticipated C. somewhat controversial quite unexpected Olestra is different from ordinary fats in that ?? ? A. it passes through the intestines without being absorbed B. it facilitates the absorption of vitamins by the bod C. it helps reduce the incidence of heart disease D. it prevents excessive intake of vitamins 24. What is a possible effect of olestra according to some critics? A. It may impair the digestive system. B. It may affect the overall fat intake. C. It may increase the risk of cancer. D. It may spoil the consumers appetite 25. Why are nutritionists concerned about adding vitamins to olestra? A. It may lead to the over-consumption of vitamins. B. People may be induced to eat more than is necessary. C. The function of the intestines may be weakened
A. contains plenty of nutrients B. renders foods calorie-free while retaining their vitamins C. makes foods easily digestible D. makes foods fat-free while keeping them delicious 22. The result of the search for an easily digestible fat turned out to be ？？？？？？？？？？. A. commercially useless B. just as anticipated C. somewhat controversial D. quite unexpected 23. Olestra is different from ordinary fats in that ？？？？？？？？？？？. A. it passes through the intestines without being absorbed B. it facilitates the absorption of vitamins by the body C. it helps reduce the incidence of heart disease D. it prevents excessive intake of vitamins 24. What is a possible effect of olestra according to some critics? A. It may impair the digestive system. B. It may affect the overall fat intake. C. It may increase the risk of cancer. D. It may spoil the consumers’ appetite. 25. Why are nutritionists concerned about adding vitamins to olestra? A. It may lead to the over-consumption of vitamins. B. People may be induced to eat more than is necessary. C. The function of the intestines may be weakened
D. It may trigger a new wave of fake food product ior Although rarely seen, bats, as compared to other mammals, are quite common. Bats rank second only to rodents in number and diversity of species. Their numbers probably total in the tens of billions. Bats also vary considerably in size-from the tiny Philippine bamboo bat, with a six-inch wingspan and weighing 1/20 of an ounce to the flying fox" with a wingspan of four or five feet and weight of two poun The diet of bats is varied. Most types eat insects, but they also consume blood pollen, and nectar and fruits. Some eat other vertebrates (animals with backbones) such as fish, lizards, and even other bats. Those that feed on flowers very often server as the primary pollinator of the flowers. The insect-consuming forms, quite Perhaps the most unusual characteristic of bats is their skilled nocturnal flying ability. This skill is so highly developed that they are capable of avoiding obstacles even in total darkness. Bats possess a high degree of tactile sense that may help them in avoiding obstacles, but their primary ability to do so is based on their ability to make high-pit ched sounds and on their acute hearing ability. Flying bats were long thought to be silent creatures, but this is now known not to be the case. While in flight, bats are continuously emitting a series of ultrasonic orientation pulses that are inaudible to the human ear. The frequency of the cries of bats, at 50, 000 vibrations per second, is estimated to be two and half times higher than the human ear can hear. This unique operation, a highly refined type of sonar system, alle o detect rebounding pulses from obstacles near and far in its environment. The system is unique, additionally, in that the bat is capable of sorting through numerous rebounding pulses so as to avoid objects in its immediate path. Researchers are attempting to understand this system in hopes that it may reveal how the human brain processes sensory information. In the final analysis bats are interesting and amazing: and to contrast to popular legends, they are quite useful and helpful to nature and man. 26. Which of the following is true? A. There are more rodents in the world than bats B. There are more bats in the world than rodents
D. It may trigger a new wave of fake food production. 2 Although rarely seen, bats, as compared to other mammals, are quite common. Bats rank second only to rodents in number and diversity of species. Their numbers probably total in the tens of billions. Bats also vary considerably in size-from the tiny Philippine bamboo bat, with a six-inch wingspan and weighing 1/20th of an ounce to the “flying fox” with a wingspan of four or five feet and weight of two pounds. The diet of bats is varied. Most types eat insects, but they also consume blood, pollen, and nectar and fruits. Some eat other vertebrates (animals with backbones) such as fish, lizards, and even other bats. Those that feed on flowers very often server as the primary pollinator of the flowers. The insect-consuming forms, quite obviously, are very beneficial. Perhaps the most unusual characteristic of bats is their skilled nocturnal flying ability. This skill is so highly developed that they are capable of avoiding obstacles even in total darkness. Bats possess a high degree of tactile sense that may help them in avoiding obstacles, but their primary ability to do so is based on their ability to make high-pitched sounds and on their acute hearing ability. Flying bats were long thought to be silent creatures, but this is now known not to be the case. While in flight, bats are continuously emitting a series of ultrasonic orientation pulses that are inaudible to the human ear. The frequency of the cries of bats, at 50,000 vibrations per second, is estimated to be two and half times higher than the human ear can hear. This unique operation, a highly refined type of sonar system, allows the bat to detect rebounding pulses from obstacles near and far in its environment. They system is unique, additionally, in that the bat is capable of sorting through numerous rebounding pulses so as to avoid objects in its immediate path. Rescarchers are attempting to understand this system in hopes that it may reveal how the human brain processes sensory information. In the final analysis bats are interesting and amazing; and to contrast to popular legends, they are quite useful and helpful to nature and man. 26. Which of the following is true? A. There are more rodents in the world than bats. B. There are more bats in the world than rodents