A-A+
Specially trained dogs are being used to______
问题详情
Specially trained dogs are being used to__________ the trapped mountain climbers in the Northwest.
A．watch over
B．keep track of
C．come up with
D．go in for请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
解析：受过特殊训练的狗正用于追踪在西北地区被围的登山者。本题是考查动词词组。watchover意为“照顾，照看，保护”；keeptrackof意为“掌握……线索，情况，跟上……”；comeupwith意为“赶上……，想出来(主意，办法等)”；goinfor意为“参加(考试或比赛)；嗜好，爱好……”。
