问题补充:
While standing on a moving bus, you’re supposed to hold onto the bar in order not to .
A. in balance
B. keep balance
C. lose balance
D. hold the balance
答案:
A. in balance
B. keep balance
(答案→)C. lose balance
D. hold the balance
解析: 题意为:站在正开动的公车上,为了不失去平衡你应拉住扶手。Lose balance 失去平衡。