- UID
- 451029
- 在线时间
- 小时
- 注册时间
- 2009-6-30
- 最后登录
- 1970-1-1
- 主题
- 帖子
- 性别
- 保密
|
The geese that gather at the pond of a large corporation create a hazard for executives who use the corporate helicopter, whose landing site is 40 feet away from the pond. To solve the problem, the corporation plans to import a large number of herding dogs to keep the geese away from the helicopter.
Which of the following, if a realistic possibility, would cast the most serious doubt on the prospects for success of the corporation’s plan?
(A) The dogs will form an uncontrollable pack.
(B) The dogs will require training to learn to herd the geese.
(C) The dogs will frighten away foxes that prey on old and sick geese.
(D) It will be necessary to keep the dogs in quarantine for 30 days after importing them.（A）
(E) Some of the geese will move to the pond of another corporation in order to avoid being herded by the dogs.
为什么选A?
Houses built during the last ten years have been found to contain indoor air pollution at levels that are, on average, much higher than the levels found in older houses. The reason air-pollution levels are higher in the newer houses is that many such houses are built near the sites of old waste dumps or where automobile emissions are heavy.
Which of the following, if true, calls into question the explanation above?
(A) Many new houses are built with air-filtration systems that remove from the house pollutants that are generated indoors.
(B) The easing of standards for smokestack emissions has led to an increase in air-pollution levels in homes.
(C) New houses built in secluded rural areas are relatively free of air pollutants.
(D) Warm-weather conditions tend to slow down the movement of air, thus keeping pollution trapped near its source.（E）
(E) Pressboard, an inexpensive new plywood substitute now often used in the construction of houses, emits the pollutant formaldehyde into the house
E,A怎么不选？
Manager: Accounting and Billing are located right next to each other and the two departments do similar kinds of work; yet expenditures for clerical supplies charged to Billing are much higher. Is Billing wasting supplies?
Head of Billing: Not at all.
Which of the following, if true, best supports the position of the Head of Billing?
(A) There are more staff members in Accounting than in Billing.
(B) Two years ago, expenditures in Accounting for clerical supplies were the same as were expenditures that year in Billing for clerical supplies.
(C) The work of Billing now requires a wider variety of clerical supplies than it did in the past.
(D) Some of the paper-and-pencil work of both Accounting and Billing has been replaced by work done on computers.（E）
(E) Members of Accounting found the clerical supplies cabinet of Billing more convenient to go to for supplies than their own department’s cabinet.
E, 不懂。
The wild mouflon sheep of the island of Corsica are direct descendants of sheep that escaped from domestication on the island 8,000 years ago. They therefore provide archaeologists with a picture of what some early domesticated sheep looked like, before the deliberate selective breeding that produced modern domesticated sheep began.
The argument above makes which of the following assumptions?
(A) The domesticated sheep of 8,000 years ago were quite dissimilar from the wild sheep of the time.
(B) There are no other existing breeds of sheep that escaped from domestication at about the same time as the forebears of the mouflon.
(C) Modern domesticated sheep are direct descendants of sheep that were wild 8,000 years ago.
(D) Mouflon sheep are more similar to their forebears of 8,000 years ago than modern domesticated sheep are to theirs.（D）
(E) The climate of Corsica has not changed at all in the last 8,000 years.
D,B怎么了？ |
|
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号
发表于 2009-12-15 10:55:29
收藏
收藏
