揽瓜阁 逻辑做题小分队Day118

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Treating meat with irradiation kills many bacteria that can cause illness but it also triggers chemical decompositions. These decompositions produce substances that can cause cancer. Thorough cooking kills the same bacteria in meat as does irradiation treatment. Therefore, to minimize health risks, meat should be cooked thoroughly rather than treated with irradiation.

Which of the following, if true, most seriously weakens the argument above?
(A) Neither thorough cooking nor irradiation treatment can kill all of the bacteria present in some meats.
(B) Since radiation was first used to treat meat, the amount of irradiation required for the process has been greatly reduced.
(C) Not all of the substances produced by the chemical decompositions triggered by irradiation are potentially carcinogenic.
(D) Some of the bacteria that are found in cooked meat are beneficial to digestive processes in humans.
(E) Thoroughly cooked, unirradiated meat contains potentially carcinogenic substances identical to those found in meat treated with radiation.

Even though vegetable meal is nutritious to fish and less costly to use than anchovy meal, most fish farmers feed their fish only anchovy meal because fish prefer its taste and consequently gain weight faster. Farmed fish would gain weight faster still on a diet consisting of a new seafood product, but this diet’s advantages did not compensate its additional cost. Nevertheless, the product’s developers predict that their product will be a commercially successful food for farmed fish.

Which of the following, if true, most helps to justify the developer’s prediction?

A Farmed fish preferred taste of a mixture of the new product and vegetable meal over the taste of anchovy meal

B In the wild, fish of the species that are commonly farmed have diets that are more similar to in composition to the new product than to anchovy meal.

C A pound of the new product provides more calories to farmed fish than does a pound of anchovy meal.

D The new product can only be used as fish food whereas anchovy meal can be used for a variety of other purposes.

E The new product will be sold at artificially low prices throughout introductory period in order to entice fish farmers to use it at least once.

参考答案：EA

yjjy3712

ee

CaryX

Mark一下！               

svwma

EC

r_o_s_e

3 E 01:55  AB方案，B方案缺少了什么？
4 A 01:04  either or论证，mix更好

清影嘿嘿

Ea

zyycn

1、A辐射可以杀菌，但是会产生有害物质，B彻底烹饪也可以杀菌，所以为了减少风险要用B彻底烹饪。问weaken
思考：对比论证，考虑B额外的缺点或者A额外的优点。

A：AB都不能杀死所有细菌。没有对比。
B：辐射剂量已大幅减少。说A的缺点没有那么严重，无法削弱。
C：不是所有辐射产生的分解物都会致癌。说A的缺点没有那么严重，无法削弱。
D：在烹饪过的肉里，有一些细菌对消化有益。方向反。
E：彻底烹饪的食物里也有有害物质，与辐射一样。正确，B额外的缺点。

选E

2、E餐又便宜又营养，A餐贵但是鱼爱吃所以增重快，新餐增重更快但是增加的重量不能弥补多出来的成本，但预计新餐将会成功。
问explain
思考：对比论证，考虑新餐额外的优点。

A：对比A餐来说，鱼更喜欢E餐混合新餐的口感。正确，这样既可以降低成本，又可以让鱼增重快。
B：在野外的鱼吃的和新餐更相似。条件没说野外的鱼更好，所以更相似不能说明什么。
C：每磅新餐提供的卡路里比A餐多。条件没说卡路里多有什么好处，即使有也只是解释前提为什么新餐增重更快。
D：新餐只能当鱼饲料，而A餐还有别的用途。方向反。
E：新餐会在引进阶段用很低的价格来吸引农户。选项是artificially，结论说要commercially success，所以无法说明新餐会成功。

选A

Dora晴

EC
卡路里不等于增重
鱼喜欢才能增重