| In everyday usage "hot" means "having a
lot of heat". Many people think that "cold" is something completely separated
from heat. But this is not true. "Cold" simply means "having little
heat". Your life depends on heat. In fact, every living thing depends on it. Without heat, every living thing would be frozen to death. All living things get their heat from the sun, which provides the conditions in which life is possible. Since before the dawn of history, man has been able to make his own heat. He has been able to release the sun’s heat that is trapped in things such as wood, coal, and oil. And he has been able to use this heat. Heat has made civilization possible. With heat, man could melt metals. As man learned to use metals and fuels, industries grew. As a result, engines were invented. These are machines that change heat energ A. the weather is fine and it is in summer B. one has a temperature C. having a great deal of heat D. having very little heat [单项选择]In every day usage "hot" means "having a lot of heat". Many people think that "cold" is something completely separated from heat. But this is not true. "Cold" simply means "having very little heat."
Your life depends on heat. In fact, every living thing depends on it. (28) Without heat, every living thing would be frozen to death. All living things get their heat from the sun, which provides the conditions in which life is possible. Since the dawn of history, man has been able to make his own heat. He has been able to release the sun’s heat that is trapped in things such as wood, coal and oil. And he has been able to use this heat. Heat has made civilization possible. With heat, man could melt metals. As man learned to use metals and fuels, industries grew. As a result, engines were invented. These are machines that change heat energy into mechanical energy. Engine can do the work of many men. Without engines industrial civilization is impossible. Yet when th A. in the cold season human beings will die B. one usually builds his life on fire C. the more heat one has, the better D. it is impossible for man to live without heat [填空题]Unemployment means a lot of time, especially for those hard-charging executives who are not used to having any ______ time.
[单项选择]Demi says being paid ＄12.5 million means a lot to her especially because ______.
A. now she is the highest paid actress in Hollywood B. it changes people’s perception of women in Hollywood C. it helps her gain self-confidence D. she finally gets what should be her hard work’s worth 我来回答: 提交
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