China has been working very hard to stop the endangered animals .
A. dying out
B. dying away
C. dying down
D. dying hard
网友回答
(答案→)A. dying out
B. dying away
C. dying down
D. dying hard
解析：短语辨析。 A. 灭绝；消失 B. 渐弱；消失 C.逐渐消失 D. 难改掉。句意：中国正在付出艰辛努力阻止濒临绝种的动物灭绝。故选A。