题目
47)Just as the letter says,please _ , as it will be difficult for you to see what is behind you.A. look backB. watch your backC. answer backD. keep your back
47)Just as the letter says,please _ , as it will be difficult for you to see what is behind you.
A. look back
B. watch your back
C. answer back
D. keep your back
题目解答
答案
B. watch your back
解析
本题主要考查固定短语的用法和语境理解能力。关键点在于理解句子中“please _”后需要填入一个表示“注意背后安全”的习惯表达。“watch your back”是常用短语，意为“当心背后”或“小心有人靠近”，符合题干中“难以看到背后事物”的语境。
选项分析
A. look back
“look back”意为“回头看”，强调主动回头看的动作，但题干中需要的是“保持某种状态以便看到背后”，因此不符合语境。
B. watch your back
“watch your back”是固定短语，表示“当心背后的情况”（如有人接近或潜在危险），与题干中“难以看到背后”的提醒逻辑一致，是正确答案。
C. answer back
“answer back”意为“顶嘴、反驳”，与题干语境无关，可直接排除。
D. keep your back
“keep your back”结构不完整（缺少动词或形容词修饰），且无法表达“注意背后”的含义，排除。