TOEFL Reading: ETS-TOEFL阅读机经 - 6JDY83IVNJOB6W44L$

According to paragraph 2, some intertidal animals are not considered true poikilotherms because they A. can change color and therefore the amount of heat that is absorbed B. keep their body temperature lower than that of the ambient environment C. use various techniques to lower their body temperature when overheated by the Sun D. match their body temperature directly with the air temperature