Dorothy sank back on the pillow and closed her eyes. After a while, she fell asleep and breathed（） .
A、
vigorously
B、
powerfully
C、
forcefully
D、
heavily
【正确答案】：D
【题目解析】：
副词词义辨析：Dorothy把头陷进枕头里然后闭上了眼睛过了一会儿他睡着了，而且呼吸很沉。 breathe heavily， vigorously 充满精力地； powerfully 影响力强地； forcefully 强有力地。