Bears ________ fat stores throughout the summer and fall to have energy enough t

题型：不详难度：来源：

Bears ________ fat stores throughout the summer and fall to have energy enough to last them through their winter sleep.                                     (2013·浙江，17)

A．pack up	B．build up
C．bring up	D．take up

答案

解析

B
解析　考查动词短语辨析。pack up打包，收拾行李；build up搭建，积累，增强；bring up养育，抚养；take up占据，拿起。根据句意“熊在夏秋两季积累自己的脂肪储备，以便在冬眠时有充足的能量来度过冬季。”知B项符合题意。