A DESERT IS A HOSTILE, POTENTIALLY DEADLY ENVIRONMENT FOR UNPREPARED HUMANS

Exercise 17:A desert is a hostile, potentially deadly environment for unprepared humans. In hot deserts, high temperaturescause rapid loss of water due to sweating, and the absence of water sources with which to replenish it can result indehydration and death within a few days. In addition, unprotected humans are also at risk from heatstroke.Humans may also have to adapt to sandstorms in some deserts, not just in their adverse effects on respiratorysystems and eyes, but also in their potentially harmful effects on equipment such as filters, vehicles andcommunication equipment. Sandstorms can last for hours, sometimes even days.Despite this, some cultures have made hot deserts 'their home for thousands of years, including the Bedouin,Tuareg tribe, and Pueblo people. Modern technology, including advanced irrigation systems, desalinization and airconditioning, has made deserts much more hospitable, In the United States and Israel for example, desert farminghas found extensive use.In cold deserts, hypothermia and frostbite are the chief hazards, as well as dehydration in the absence of asource of heat to melt ice for drinking. Falling through pack-ice or surface ice layers into freezing water is aparticular danger requiring emergency action to prevent rapid hypothermia. Starvation is also a hazard; in lowtemperatures the body requires much more food energy to maintain body heat and to move. As with hot deserts,some people such as the Inuit have adapted to the harsh conditions of cold deserts.1. The text is about ________.A. troubles that human beings have to face in a desert B. desert storms and desert inhabitantsC. hot deserts and cold deserts in the United States D. desert hospitality and environment2. Which is not a problem for an unprepared man in a hot desert?A. sandstorm B. loss of water C. irrigation D. heatstroke3. Sandstorms ________.A. do no harm to machinery B. have effects only on the eyesC. never lasts more than one hour D. have bad effects on both human beings and machinery4. Which sentence is true?A. No one can survive in both hot and cold deserts. B. Modern technology makes deserts more hospitable.C. In the United States, all deserts are quite uninhabited D. There are no deserts in Israel.5. Which is not a problem in cold deserts?A. Starvation B. Hypothermia C. Frostbite D. Body heat