【題目】Bears ________ fat stores throughout the summer and fall to have energy enough to last them through winter sleep.

A.build upB.pack upC.bring upD.take up

【答案】A

【解析】

考查動詞短語辨析。句意：黑熊在夏天儲存脂肪，秋天有足夠的能量去維持他們的冬眠。

A. build up積聚，加強，增多；B. pack up收拾行李；C. bring up撫養(yǎng)，嘔吐；D. take up開始從事，占（時間，空間）。黑熊為了過冬要增加自己的脂肪，故選A。

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