Whichofthefollowingstatementsaboutthewarm-bloodedmammalsistr ueaccordingtothetext?
A.Theycanchangetheirenvironments.
B.Theycanadjustbodyheattokeeptheiridealtemperature.
C.Theycanmakefoodfromchemicals.
D.Theygetmostoftheirheatfromtheenvironment.
正确答案:B[解析]见最后一段,第三、四行。



