题型:填空题 –Excuse me, sir, but I don’t think you can smoke here.–Really sorry. I ______ this is a non-smoking area.A.don’t knowB.didn’t knowC.have no ideaD.haven’t known 查看答案
题型:填空题 —What’s that building?— the medical equipment is stored.A.There’s in whichB.That’s whereC.The building thatD.That’s the building which 查看答案
题型:填空题 下列调节过程不属于负反馈调节作用的是()。A.人体血糖浓度上升引起胰高血糖素分泌减少B.大量猎杀草原食肉动物,导致食草动物的数量先升后降C.在酶促反应中,反应终产物过量致使酶的活性下降D.湖泊受污染后鱼类数量减少,鱼体死亡腐烂进一步加重污染 查看答案