24. Why can cheese brine help keep winter roads ice-free?
- A. It is soft.
- B. It contains salt.
- C. It is warm.
- D. It has milk in it.
答案：B
答案句：Cheese brine has salt in it, which, like the rock salt, helps lower water’s freezing point.
参考译文：奶酪盐水里有盐，和岩盐一样，有助于降低水的冰点。
定位线索：题干“Why can cheese brine help keep winter roads ice-free”→答案句“Cheese brine has salt in it...helps lower water's freezing point”；文中“has salt in it”对应选项B“It contains salt”。
解析：题干问奶酪盐水为何能防止道路结冰，答案句直接说明它含有盐，盐能降低水的冰点，因此选B。选项A“柔软”、C“温暖”、D“含牛奶”均与原文无关，属于无中生有。
25. What is benefit of using cheese brine on roads?
- A. Improving air quality.
- B. Increasing sales of rock salt.
- C. Reducing water pollution.
- D. Saving the cheese industry.
答案：C
答案句：The chemical washes off roads and goes into the ground. There it can pollute drinking water, harm plants, and eat away soil. By spreading cheese brine on streets before adding a layer of rock salt, Milwaukee may be able to cut its rock salt use by 30 percent.
参考译文：这种化学物质从道路上冲走，进入地下。在那里它会污染饮用水，伤害植物，侵蚀土壤。通过在撒一层岩盐之前先在街道上撒奶酪盐水，密尔沃基可能能够减少30%的岩盐使用量。
定位线索：题干“What is benefit of using cheese brine on roads”→答案句“cut its rock salt use by 30 percent”及前文“pollute drinking water”；文中“cut its rock salt use”对应选项C“Reducing water pollution”（减少岩盐使用→减少污染）。
解析：答案句指出岩盐会污染饮用水，而使用奶酪盐水可减少30%的岩盐使用，从而减少水污染，故选C。选项A“改善空气质量”原文未提及；B“增加岩盐销售”与减少使用相反；D“拯救奶酪产业”答非所问，文章说的是处理奶酪盐水废料。
26. Milwaukee’s new way to de-ice streets may be an example of __________.
- A. barking up the wrong tree
- B. putting the cart before the horse
- C. robbing Peter to pay Paul
- D. killing two birds with one stone
答案：D
答案句：But using cheese brine could help both cheese producers and cities save money, while keeping roads safe … In addition to saving money, cheese brine could also be a more eco-friendly option.
参考译文：但是使用奶酪盐水可以帮助奶酪生产商和城市节省资金，同时保持道路安全……除了节省资金，奶酪盐水还可能是一个更环保的选择。
定位线索：题干“Milwaukee's new way to de-ice streets”→答案句“using cheese brine could help both cheese producers and cities save money, while keeping roads safe”与“In addition to saving money, cheese brine could also be a more eco-friendly option”；文中“help both cheese producers and cities save money”和“eco-friendly”对应选项D“killing two birds with one stone”（一举两得）。
解析：题干问Milwaukee的新除冰方法可能是什么例子。答案句明确指出奶酪盐水能同时帮助生产商和城市省钱，并且环保，即一个方法带来两个好处，对应选项D“killing two birds with one stone”（一举两得）。错误选项A“barking up the wrong tree”（找错对象）、B“putting the cart before the horse”（本末倒置）、C“robbing Peter to pay Paul”（拆东墙补西墙）均与原文内容无关，属于无中生有。