問題詳情
17.Bears _______ fat stores throughout the summer and fall to have enough energy to last them through their sleep.
(A)pack up
(B)build up
(C)bring up
(D)take up
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
用户評論
【步筱昕】評論
考动词短语，必考题，看似无头绪因为很难记住意思，其实这类动词短语大多很生活化，只有平时多用才行；选B build up =make sth gradually become bigger。