______ and he had no other way of making a living. (船的丢失对这位渔民是个灾难).

A. Developing fever is the privilege of warm-blooded animals, so sick lizards can not run a fever.
B. Invertebrates also have the ability to raise their temperature.
C. The internal temperatures of warm-blooded creatures are independent of the weather, so are the cold-blooded animal.
D. Sick lizards move into the sun to develop fever.