单选题 I would like your authorization to trim the part of the tree that hangs into my yard.

【正确答案】 A

【答案解析】辨义： A．sanction批准、允许；B．encouragement鼓励；C．approval同意、赞同；D．attention注意。根据句子上下文意思，对应词应选A，sanction。故正确答案为A。