|
GWD
|
NASA's methodical approach to the exploration of Mars has not yet answered the questions of whether biological life forms ever emerged on Mars and whether, presuming such life forms having left fossil traces to begin with, those traces can still exist in some moist recesses of the cold and arid planet.
|
|
GWD PREP08 Test 1
|
The commission's office of compliance, inspections, and investigations plans to intensify its scrutiny of stock analysts to investigate not only whether research is an independent function at brokerage firms, but also whether conflicts result when analysts own the stocks they write about or when they are paid for their work by a firm's investment banking division.
|
|
GWD OG18-语文分册 OG19-语文分册
|
Under high pressure and intense heat, graphite, the most stable form of pure carbon, changes into the substance commonly referred to as diamond and remaining this way whether or not the heat and pressure are removed.
|
|
PREP07 Test 2
|
The global-warming effect of ocean white caps are one of the many aspects of the ocean environment that are not yet incorporated in any detail into the computer models used for predicting how rising greenhouse gas concentrations could affect climate.
|
|
GWD
|
Unearthed in China, fossils of feathered dinosaurs offer the most dramatic evidence yet discovered of the close evolutionary relationship between dinosaurs and birds.
|
|
GWD PREP08 Test 1
|
Concerns about public health led to the construction between 1876 and 1904 of three separate sewer systems to serve metropolitan Boston.
|
|
GWD
|
The results of two recent unrelated studies support the idea that dolphins may share certain cognitive abilities with humans and great apes; the studies indicate dolphins as capable of recognizing themselves in mirrors-an ability that is often considered a sign of self-awareness-and to grasp spontaneously the mood or intention of humans.
|
|
GWD PREP08 Test 2
|
Many entomologists say that campaigns to eradicate the fire ant in the United States have failed because the chemicals that were used were effective only in wiping out the ant's natural enemies, which made it easier for them to spread.
|
|
GWD PREP08 Test 1
|
Minivans carry as many as seven passengers and, compared with most sport utility vehicles, cost less, get better gas mileage, allow passengers to get in and out more easily, and have a smoother ride.
|
|
GWD
|
A Swiss government panel recommended that the country sell about half its gold reserves and this raised fears of other countries that do the same and inundate the market.
|
|
GWD
|
Giuseppe Alessi, a world-class chef whose life has been a search for the genuine and the delicious in Florentine cooking, is an accomplished scholar not only unearthing many of his recipes from medieval and Renaissance manuscripts but also a poet and philosopher who draws his inspiration from the idyllic frescoes of Etruscan tombs.
|
|
GWD
|
Socially and environmentally responsible investing is on the rise: last year in the United States, over $2 trillion was invested in funds that screen companies according to a variety of criteria such as adherence to labor standards, protection of the environment, and observance of human rights.
|
|
GWD PREP08 Test 2
|
When working with overseas clients, an understanding of cultural norms is at least as important as grasping the pivotal business issues for the global manager.
|
|
GWD PREP08 Test 2
|
For the first time in the modern era, non-Hispanic Whites are officially a minority in California, which amounts to a little less than half the population of the state, down from nearly three-quarters only a decade ago.
|
|
GWD PREP08 Test 2
|
Soaring television costs accounted for more than half the spending in the presidential campaign of 1992, a greater proportion than it was in any previous election.
|
|
GWD PREP08 Test 1
|
By sucking sap from the young twigs of the hemlock tree, tree growth is retarded by the woolly adelgid, causing needles to change color from deep green to grayish green and to drop prematurely.
|
|
GWD PREP08 Test 2
|
For the farmer who takes care to keep them cool, providing them with high-energy feed, and milking them regularly, Holstein cows are producing an average of 2,275 gallons of milk each per year.
|
|
GWD PREP08 Test 2
|
Humans have been damaging the environment for centuries by overcutting trees and farming too intensively, and though some protective measures, like the establishment of national forests and wildlife sanctuaries, having been taken decades ago, great increases in population and in the intensity of industrialization are causing a worldwide ecological crisis.
|
|
PREP07 Test 2 GWD
|
Galileo did not invent the telescope, but on hearing, in 1609, that such an optical instrument had been made, he quickly built his own device from an organ pipe and spectacle lenses.
|
|
GWD PREP08 Test 1
|
Unlike the short flights of the shuttle and earlier spacecraft, which carried sufficient power in fuel cells and batteries, a permanently orbiting space station will have to generate its own electricity.
|