单选题 The skin of the forest keeper ______ exposure to the harsh northwest weather.

A、 is tanned from
B、 is colored from
C、 is tainted by
D、 is encoded by

【正确答案】 A

【答案解析】考查动词词组和搭配。tan是“晒黑”；color是“给……涂颜色”，用于被动式应该与by搭配；taint是“玷污；败坏；腐蚀”，常与with连用，如：be tainted with prejudices(受偏见的影响)；encode是“译成密码”。只有A从含义和搭配上均符合本句。