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Scattered around the globe are more than 100 small regions of isolated volcanic activity known to geologists as hot spots. Unlike most of the world’ s volcanoes, they are not always found at the boundaries of the great drifting plates that make up the earth’ s surface; on the contrary, many of them lie deep in the interior of a plate. Most of the hot spots move only slowly, and in some cases the movement of the plates past them has left trails of dead volcanoes. The hot spots and their volcanic trails are milestones that mark the passage of the plates.
That the plates are moving is not beyond dispute. Africa and South America, for example, are moving away from earth other as new material is injected into the sea floor between them. The complementary coastlines and certain geological features that seem to span the ocean are reminders of where the two continents were once joined. The relative motion of the plates carrying these continents h
A. the motion of the plates corresponds to that of the earth' s interior '
B. the geological theory about drifting plates has been proved to be true
C. the hot spots and the plates move slowly in opposite directions
D. the movement of hot spots proves the continents are moving apart
Text 2 The hotels are lull, Japanese tourists throng the designer stores of Waikiki, and the unemployment rate is a mere 3% of the workforce. So what could possibly knock Hawaii, the "aloha" or "welcome” state, off its wave The answer is that Hawaii’s 1.2m residents may one day get fed up with playing host to overseas visitors, 7m of them this year. Indeed, some residents are already fed up. KAHEA, an alliance of environmentalists and defenders of native Hawaiian culture, bemoans the pollution caused by the cruise ships and the risk posed by the tourist hordes to creatures such as the dark-rumped petrel and the Oahu tree snail, or to plants like the Marsilea villosa fern. KAHEA has a point: the US Fish＆Wildlife Service currently lists some 317 species, including 273 plants, in the Hawaiian islands as threatened or endangered the highest number of any state in the nation. Even the state flower, the hibiscus brackenridgei, is on the danger list. Th
A. there is a great deal of trouble living in Hawaii.
B. living expenditure in Hawaii is as high as that in Manhattan.
C. living expenditure in Hawaii is incompatible with income.
D. house price today in Hawaii is unbelievably high.
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