问题
选择题
Bears ______ fat stores throughout the summer and fall to have energy enough to last them through their winter sleep.
A．bring up
B．pack up
C．take up
D．build up
答案
答案：D
题目分析：考查动词短语辨析。句意：熊在整个夏秋季节储存脂肪，以获得足够的能量来度过冬天的冬眠。A提出，抚养；B打包；C占据（时间、空间），从事；D积聚，逐渐增加；锻炼身体。故选D。