The touch excites no defensive resp

根据考试中心的统计分析，以下试题在2019/10/13日高考习题练习中，答错率较高，为：79%
【单选题】Thetouchexcitesnodefensiveresponseunlesstheapproachisfromabovewherethespidercanseethemotion,______onitshindlegs,liftsitsfrontlegs,opensitsfangsandholdsthisthreateningpostureaslongastheobjectcontinuestomove.A、inwhichcaseitr isesB、inthatcaseitr isesC、inwhichcasedoesitr iseD、suchbeingthecaseitr ises
参考答案：A，答错率：79%