Geography is the study of the relationship between people and the land. Geographers compare and contrast various places on the earth. But they also (51) beyond the individual places and consider the earth as a whole. The English word geography means "to describe the earth. " (52) geography books focus on a small area like a town or city. Others deal with a state, a region, a nation, or an (53) continent. Many geography books deal with the whole earth. Another (54) to divide the study of geography is to distinguish between physical geography and cultural geography. The former focuses on the natural world; the (55) starts with human beings and studies how human beings and their environment act (56) each other. But when geography is considered as a single subject, (57) branch can neglect the other. A geographer might be described as one who observes, records, and explains the (58) between places. If al
A. Some
B. Many
C. Most
D. Few
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There’s been a lot of talk about anthrax on the news lately. Some people are worried that anthrax may be connected to terrorist attacks or that terrorists may spread the germ that (51) the disease. Federal officials and police are investigating this and taking (52) to protect us.
In the meantime, it’s important not to panic over anthrax. The chances that you and your Family (53) at risk are very tiny. One of the ways you can feel better is to learn about anthrax. When you know what it is and (54) you can get it, it doesn’t seem quite as scary.
So, what (55) is anthrax
Here are the facts on anthrax：
Anthrax is a bacterial infection caused by a germ Although it’s most common in farm (56) , like sheep, COWS, pigs, horses, and goats, there’s a very small chance that people can get it, too, Anthrax
A. so
B. is
C. exists
D. does
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对明确诊断最有价值的实验室检查是（）
Faith in medicine runs deep in America. We spend more per person on health care than any other nation. Whether we eat too much or exercise too little, whether we’re turning gray or feeling blue, we look to some pill or procedure to make us better.
We assume that devoting ever more dollars to medicine will bring us longer, healthier lives. But there is mounting evidence that each new dollar we devote to the current health care system brings small and diminishing returns to public health. Today the United States spends more than $4,500 per person per year on health care. Costa Rica spends less than $ 300. Yet life expectancy at birth is nearly identical in both countries.
Despite the highly publicized "longevity revolution", life expectancy among the elderly in the United States is hardly improving. Yes, we are an aging society, but primarily because of falling birthrates. Younger Americans, meanwhile, are far more likely to be disabled than they wer
A. more money spent on health care may not result in better health.
B. health problems caused by bad habits can hardly be solved by medicine.
C. higher birthrate can better solve the problem of aging society than medicine.
D. medicine may provide an effective cure for various health problems.
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