在第一个句子 “There is not much coal _ oil on Earth.”中,这是一个否定句,表示地球上没有太多的煤和石油,在否定句中表示 “和” 要用 “or”。在第二个句子 “Some energy comes from coal _ oil.”中,这是一个肯定句,表示一些能源来自于煤和石油,在肯定句中表示 “和” 要用 “and”。所以...
People burn coal, gas and oil to get energy. But there are problems with these fuels(燃料).(A)these fuels cause pollution. (B)Pollution makes the air and water unsafe for humans. Secondly, these fuels will not last forever. One day, we will run out of these fuels.Scientists are lookin...
Firstly, fossil fuels - coal, oil, and natural gas - have long been the primary sources of energy for humanity. Extracted from beneath the earths crust over millions of years, they contain high amounts of stored solar energy, transformed into a concentrated and easily accessible form. Despite ...
People burn coal, gas and oil to get energy. But there are problems with these fuels(燃料). (A)___, these fuels cause pollution. Pollution makes the air and water unsafe for humans. Secondly, these fuels will not last forever. One day, we will run out of these fuels. Scientists ...
While fossil fuels- coal,oil,gas- still generate roughly 85 percent of the world's energysupply,it'sclearer than ever that the future belongs to renewablesources such as wind and solar.Themove to renewables is picking up momentumaround the world: They now account for more ...
Energy from the EarthPeople burn(烧)coal,gas and oil to get energy(能源).But there are problems withthese fuels.Firstly,these fuels cause(导致)pollution.Pollution makes the air andwater unsafe(不安全)for humans.Secondly,these fuels will not last(持续)forever(永远).One day,we will run out ...
C. Energy from the Earth People burn(烧) coal, gas and oil to get energy(能源). But there are problems with these fuels. Firstly, these fuels cause(导致) pollution. Pollution makes the air and water unsafe(不安全) for humans. Secondly, these fuels will not last(持续) forever(永远)....
搜索智能精选 题目Coal, oil and natural gas are ___ and ___. A clean ... recyclable B renewable resource ... unconventional energy C non-renewable resource ... conventional energy 答案 C
aCoal, oil, natural gas, and all other fuels are stored-up energy from the sun. Some was collected by this season's plants as carbon compounds. Some was stored by plants and trees ages ago. 煤炭、石油、天然气和其他燃料是stored-up能量从星期日。 一些由这个季节的植物收集当碳化合物。 一些...
结果1 题目Which of the following is a renewable energy source? A. Coal. B. Oil. C. Natural gas. D. Wind. 相关知识点: 试题来源: 解析 D。风能是可再生能源。选项 A 煤炭、选项 B 石油、选项 C 天然气都是不可再生能源。反馈 收藏