来源：

题目：

According to the passage, Clayton's experiment depended on the fact that scrub jays

来源：

题目：

The passage suggests that Clayton's experiment demonstrated scrub jays' ability to

来源：

题目：

The passage is primarily concerned with

来源：

题目：

According to the passage, which of the following resulted from foreign investment in the United States after 1979?

来源：

题目： Although aspirin has been proven to eliminate moderate fever associated with some illnesses, many doctors no longer routinely recommend its use for this purpose. A moderate fever stimulates the activity of the body's disease-fighting white blood cells and also inhibits the growth of many strains of disease-causing bacteria.If the statements above are true, which of the following conclusions is most strongly supported by them?

来源：

题目：

According to the passage, which of the following is true about the preindustrial long distance trade networks mentioned in the highlighted text?

来源：

题目：

According to the passage, the inhabitants of the Andean highlands resolved the problem of unequal resource distribution primarily in which of the following ways?

来源：

题目：

The passage suggests that as a way of addressing the problem of different resource distribution in the preindustrial world, the practice of vertical economy differed from the use of long-distance trade networks in that vertical economy allowed

来源：

题目：

The passage suggests that for an Andean highland village attempting to resolve the problem of unequal resource distribution, the strategy known as compressed verticality would probably be inappropriate for which of the following situations?

来源：

题目：

The passage is primarily concerned with discussing

来源：

题目：

It can be inferred from the passage that a chain of volcanoes created by a mantle plume would most likely be characterized by

来源：

题目：

The author's reference to the Hawaiian Islands serves primarily to

来源：

题目：

According to the passage, a hot spot on Earth's surface is an indication of which of the following?

来源：

题目：

The primary purpose of the passage is to

来源：

题目：

The passage suggests that downsizing's mythic properties can be beneficial to a downsizing firm because these properties