TOEFL Reading: ETS-TOEFL阅读机经 - E5W20U39T31FM3W9L$

Which of the following can be inferred from paragraph 4 about sit-and-wait lizards A. They have less glycogen than active-forager lizards. B. They have highly variable heart rates. C. They have metabolic systems that do not depend on the efficient removal of carbon dioxide. D. They synthesize adenosine triphosphate continuously.