Jan 20, 2022 · All rattlesnakes are cold blooded and require an external heat source, rather than their internal metabolism to regulate body temperature. They do best in temperatures between 70 and 90 degrees Fahrenheit, and must retreat from hot- or cold-temperature extremes to survive.
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Jan 19, 2022 · Lesson2Skimming1、Gothroughthepassage“BodyLanguage”within1minute,andanswerthequestionthatfollows.(Tip. 驾校问答> 中国大学mooc英语阅读（4）题库 ...