举一反三
- S3. If the temperature at the earth’s surface is 20F, the temperature in a coal mine 500 feet below the surface would be _____________________.
- Carbon dioxide is now a threat to ______. A: people staying indoors B: people in poor health C: the earth's vegetation D: the earth's temperature
- According to the report, the rise of the earth's average surface temperature is attributed to some natural reasons.
- What is the main cause for global average surface temperature rising since the mid-20th century? A: Human activities; B: Natural disaster; C: Crustal movement; D: Earth surface chemical weathering.
- As the temperature of a body rises, the radiated heat also increases.
内容
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what the analogy is: which two things are being compared?The earth’s atmosphere is like a blanket of gases around the earth. It is only a thin layer but it helps to maintain the temperature of the earth, keeping us warm. It also offers a layer of protection from the intensity of the sun. A: earth’s atmosphere and a blanket B: earth’s atmosphere and gases C: earth’s atmosphere and a layer of protection D: earth’s atmosphere and a blanket of gases
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Global warming and climate change are terms for the observed century-scale rise in the average temperature of the Earth’s _____ and its related effects.
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4. We can assume that by the end of the 21st-century, global warming is likely to cause an increase in the earth’s temperature of around degrees Celsius. A: 2-5 B: 1 C: 3-4 D: 4
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Global warming refers to the increase in the average temperature of the earth's near surface air and oceans in recent decades and its projected continuation.
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Of all the elements in the Earth's crust, oxygen is known to be the more common.（） A: Of all B: elements C: to be D: more