verbal经典题库42详解(5)

14.

15.

16. Insurance companies are experiencing a boom in their core markets. C Insurance companies are competing to provide best prices to customers. T Insurance companies are coping well with increased price competition and rising losses. F Short-sightedness is to a large extent inherited, its incidence varies from one family to another. The reason behind the link between the common incidence of short-sightedness and high intelligence is unclear. Previous generations thought that eyes could become strained by years spent poring over books, but a few decades ago the popular medical view was that short-sighted people gravitated towards the library because they found it hard to excel at sports. Recently there has been partial support for a theory that high intelligence and short-sightedness may, in fact, be part of a genetic package. The genetic link between intelligence and short-sightedness has recently been disproven. F People from all families stand at an equal chance of being short-sighted. F Intelligence is to a large extent inherited. C The cosmic microwave background (CMB) radiation is the afterglow from the Big Bang, and weak as it may be today, these primeval microwaves hold valuable information about fundamental properties of the early universe. Slight differences, or anisotropies, in the brightness and polarization of the CMB reveal clues about the nature of the primeval plasma: that the discrepancies exist at all shows that the plasma was not perfectly uniform. The variations in the brightness seen in the CMB reflect differences in the density of the primordial plasma, whereas the anisotropic polarization reveals information about the dynamics of the early universe, such as the movement of material and the number of gravitational waves. The CMB, however, is not the only source of polarized microwaves and the cosmological polarization must thus be measured at different wavelengths so as to isolate them from foreground signals. The anisotropies of the CMB show solely that the primordial plasma was not uniform. F The polarization of cosmic microwaves is measured at different wavelength so as to separate the foreground from the background signals. T Through studying the cosmological microwaves, one may learn about the forces of gravity in the early universe. T Internet experts are warning of a new multitude of extremely dangerous computer viruses

that have recently been causing devastation and could potentially cripple entire global computer systems. These viruses can replicate thousands of copies within hours and are capable of extirpating security software that, in turn, enables hackers to appropriate control

of the machines. Criminal gangs can then establish bank accounts using stolen identities, sabotage a company’s computer system and extort money for its restoration, and sell computers that have been interfered with on the black market. Computer users are often advised to refrain from opening suspicious program attached to the emails and to continually update their security software.

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