第1题: [填空题]People usually place an early bid in case the bidding ends too soon with someone choosing _______________. 参考答案:a "Buy It Now" option 答案解析:[定位] 由题干关键词place an early bid可将答案定位至最后一段第一句。
[解析] There is at least one reason why someone would pl
第2题: [单项选择]微生物中水的成分太大会引起() A. 营养成分的沉淀 B. 寿命减短 C. 繁殖慢 D. 不易培养 参考答案:A