At the World Bank in Washington, officials have posted some new " help wanted" signs. The bank is looking for a few good specialists to focus on adapting to global warming. It’s a small start, perhaps.
46. Still, the ads represent one signal that adaptation is emerging from the political circle to take its place among the fronl-rank options for dealing with elilnate change.
47. At least in the developed world, the idea that people should start figuring out how to deal with the projected effects of warming has been overshadowed by calls to reduce carbon-dioxide emissions. Some environmentalists have viewed adaptation either as a white flag on the issue or as a refuge of cont rarians who despise the broad consensus that human activity is warming the climate.
48. But last week’s release of a report on the science of global warming—with its projections of warming based on emissions already in the air, as well as on
| Rocks which have solidified directly
from molten materials are called igneous rocks. Igneous rocks are commonly
referred to as primary rocks because they are the original source of material
found in sedimentaries and metamorphics. Igneous rocks compose the greater part
of the earth’s crust, but they are generally covered at the surface by a
relatively thin layer of sedimentary or metamorphic rocks. Igneous rocks are
distinguished by the following characteristics: (1) they contain no fossils; (2)
they have no regular arrangement of layers; and (3) they are nearly always made
up of crystals. Sedimentary rocks are composed largely of minute fragments derived from the disintegration of existing rocks and in some instances from the remains of animals. As sediments are transported, individual fragments are assorted according to size. Distinct layers of such sed A. Granite. B. Shale. C. Slate. D. Limestone. [单项选择]Rocks which have solidified directly from molten materials are called igneous rocks. Igneous rocks are commonly referred to as primary rocks because they are the original source of material found in sedimentaries and metamorphics. Igneous rocks compose the greater part of the earth’s crust, but they are generally covered at the surface by a relatively thin layer of sedimentary or metamorphic rocks. Igneous rocks are distinguished by the following characteristics: (1) they contain no fossils; (2) they have no regular arrangement of layers; and (3) they are nearly always made up of crystals.
Sedimentary rocks are composed largely of minute fragments derived from the disintegration of existing rocks and in some instances from the remains of animals. As sediments are transported, individual fragments are assorted according to size. Distinct layers of such sediments as gravels, sand, and clay build up, as they are deposited by water and occasionally wind. These sediments vary in size wit A. Granite. B. Shale. C. Slate. D. Limeston [简答题]Electronic computers, which have many advantages, cannot carry out creative work and replace man.
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