题目:
Turtles, like other reptiles, can endure long fasts, in their ability to survive on weekly or even monthly feedings; however, when food is readily available, they may eat frequently and grow very fat.
选项:
A、fasts, in their ability to survive
B、fasts, having their ability to survive
C、fasts, due to having the ability of surviving
D、fasts because they are able to survive
E、fasts because of having the ability of surviving
答案:
D