题目内容
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The main thought of this passage is that anger ______.
A．is difficult to detect by looking at a person's face
B．is frequently confused with other emotions
C．is detected by women better than by men
D．cannot be detected by a psychologically trained person
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更多“The main thought of this passage is that anger ______.A．is difficult to detect by looking”相关的问题
A、TV, movies, and the Internet will become dominant fixtures in their lives.
B、They may suffer from depression, anxiety or a decrease in self-esteem.
C、Their lives will be improved by such a pleasant diversion.
D、They will no longer live their lives in a fantasy world.
A、I fall upon the thorns of life! I bleed!
B、Away! Away! For I will fly to thee, / Not charioted by Bacchus and his pards, / But on the viewless wings of Poesy.
C、One shade the more, one ray the less / Had half impaired the nameless grace.
D、And then my heart with pleasure fills, / And dances with the daffodils.
Mercury, the planet nearest the sun, is difficult to observe from the Earth because it rises and sets within two hours of the sun. ______【46】
Planetary scientists can estimates the age of a planet's surface by the number of impact craters on it. In general, the older the surface, the more craters it has. ______【47】. Between these regions are areas of gently rolling plains that may have been smoothed by volcanic lava flows or by accumulated deposits of fine material ejected during impacts. These plains are also old enough to have accumulated a large number of impact craters. Elsewhere on the planet are smooth, flat plains that are probably younger and volcanic in origin. ______【48】. Sometime between the formation of the intercrater plains and the formation of the smooth plains, the whole planet may have shrunk as it cooled, causing the crust to buckle and form. the long, steep cliffs called scarps.
The largest impact basin on Mercury has a diameter of about 800 miles (1, 300 kilometers) and is surrounded by mountains that rise to heights of about 1. 2 miles (2 kilometers). ______【49】.
On the opposite side of the planet is an area of hilly, linear terrain that probably resulted from seismic waves caused by the same impact.
Like other airless, solid bodies in the solar system, the entire surface of Mercury is covered with a layer of rubble called regolith, which is composed of material, ranging from dust to boulders, that was scattered when impact craters were formed. This debris was in turn broken up and redistributed by subsequent impacts.
Mercury is very dense and has a magnetic field that is about 1 percent as strong as earth's. This suggests the existence of a planetary core composed of iron and nickel and constituting about 40 percent of the planet's volume. ______【50】. Radar images taken of Mercury in 1991 show what are considered to be large ice patches at the planet's North Pole.
A. Some regions on Mercury are heavily cratered, suggesting that they are very old surfaces that were probably formed about 4 billion years ago
B. The crater was probably created by the impact of a large planetesimal when Mercury was forming
C. Consequently, little was known about the planet until the Mariner 10 spacecraft made several flybys in 1974 and 1975
D. Mercury is much smaller than the Earth
E. The surface gravity is about one-third as strong as Earth's, and a thin atmosphere surrounds the planet
F. These plains have relatively few impact craters
(46)
A．enroll
B．recruit
C．collect
D．reproduce
A．perpetual
B．recurring
C．transient
D．perilous
A．require
B．inquire
C．acquire
D．enquire
Applied research, undertaken to solve specific practical problems, has an immediate attractiveness because the results can be seen and enjoyed. For practical reasons, the sums spent on applied research in any country always far exceed those for basic research, and the proportions are more unequal in the less developed countries. Leaving aside the funds devoted to research by industry--which is naturally far more concerned with applied aspects because these increase profits quickly--the funds the U.S. Government allots to basic research currently amount to about 7 percent of its overall research and development funds. Unless adequate safeguards are provided, applied research invariably tends to drive out basic. Then, as Dr. Waterman has pointed out, "Developments will inevitably be undertaken prematurely, career incentives will gravitate strongly toward applied science, and the opportunities for making major scientific discoveries will be lost. Unfortunately, pressures to emphasize new developments, without corresponding emphasis upon pure science tend to degrade the quality of the nation's technology in the long run, rather than to improve it."
The title below that best expresses the ideas of this passage is ______.
A．Roentgen's Ignorance of X-rays
B．The Attractiveness of Applied Research
C．The Importance of Basic Research
D．Basic Research vs. Applied Research
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