题目内容
She went to Europe on vacation 'but her happy time ended in ______ when their hotel caught
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Next week, as millions of families gather for their Thanksgiving (感恩节) feasts, many other Americans will go without. According to the United States Department of Agriculture, more than 12 million households lack enough food for everyone in their family at some time during the year—including holidays.
Hunger is surprisingly widespread in our country—one of the world's wealthiest—yet the government estimates that we waste almost 100 billion pounds of food each year, more than one-quarter of our total supply.
Reducing this improper distribution of resources is a goal of America's Second Harvest, the nation's largest domestic hunger-relief organization. Last year, it distributed nearly 2 billon pounds of food to more than 23 million people in need.
America's Second Harvest is a network of 214 inter-connected food banks and other organizations that gather food from growers, processors, grocery stores and restaurants. In turn, the network distributes food to some 50,000 soup kitchens, homeless shelters and old people's centers in every county of every state.
A great deal of work is involved in distributing tons of food from thousands of donors (捐赠者) to hundreds of small, nonprofit organizations. Until a few years ago, America's Second Harvest lacked any effective way to manage their inventory. Without accurate and timely information, soup kitchens were sometimes empty while food was left to spoil in loading places.
In 2000, America's Second Harvest began to use a new inventory and financial-management system—Ceres. It is software designed specifically for hunger-relief operations. It is used by more than 100 America's Second Harvest organizations to track food from donation to distribution.
Ceres has helped reduce the spoiling of food and improve distribution. An evaluation found that the software streamlined food banks' operations by 23 percent in the first year alone.
With more accurate and timely reports, Ceres saves time, flees staff members to focus on finding new donors, and promises more efficient use of donations.
Hunger in America remains a troubling social problem. Technology alone cannot solve it. But in the hands of organizations such as America's Second Harvest, it is a powerful tool that is helping to make a difference—and helping more Americans to join in the feast.
According to the passage, the total supply of food in America every year reaches ______.
Mobile phones have proved to ______ with flight instruments and have a negative effect on
______ is often the case with a new idea, much initial activity and optimistic discussion
Venus, one of the four inner planets of our solar system, is the closest body in the sky apart from the Moon, sometimes coming only 40 million km from the Earth. Thus, in the not- so-distant future, when man has colonized the Moon, he will start looking at Venus as his next step into space.
As it is now, Venus's environment is totally unfavourable to human life. Its surface temperature is almost 480℃. Its face is almost completely hidden from view by poisonous clouds of 90% carbon dioxide.
But scientists have a simple plan which, they predict, could make Venus habitable.
With the help of rockets, they plan to bombard the carbon dioxide clouds with colonies of blue-green algae. Experiments carried out on Earth have proved that blue-green algae can survive and reproduce normally in such an environment. The algae will consume the carbon and liberate the oxygen. They reproduce so quickly that the carbon dioxide could be broken down within one year. After that, the surface of Venus will be partly visible to telescopes on Earth.
The increase in oxygen will have spectacular effects on the desert planet. As oxygen re- places the carbon dioxide, the sun's infra-red radiation, which up to that moment was trapped under the clouds of carbon dioxide, will escape into space and the temperature of the lower atmosphere will decrease. Soon, water will collect from the atmospheric vapor and rain will start falling for the first time. That first rain will never reach the surface. It will vaporize into steam high up in he Venusian atmosphere, but it will have a very important effect. It will lower the ground temperature, perhaps by 35℃. Soon the rain will fall again and again, until the ground temperature is about 70℃. Then the "Big Rain" will strike the soil of Venus for the first time and the clouds will partly clear away, leaving an oxygen-rich atmosphere and a temperature cool enough to sustain hardy plants and animals from Earth.
According to the passage, which of the following statements is true？
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