myice

[E]饱和脂肪酸会增加心脏病的危险，但日常饮用红酒会减少这个危险。法国和美国人均对饱和脂肪酸的消费量是一样的，但法国的心脏病发病率低于美国，车为法国人喝更多的红酒。两国红酒的消费差距在减小（即美国赶上来了或法国消费量少了。），但心脏病的发病率还是一样（即美国没有因为多喝红酒而减少心脏病发病率）——即法国年轻人少喝红酒（虽然美国人没有多喝），但病情要到中年才发作，而美国人的消费正常，发病率和原先也一样。

如B所说，即法国的per-capita consumption of saturated fats 增加，则heart disease会增加，合美国的CONVERGENCE就有可能，与结论矛盾，解释不了lack of convergence noted。

原文给两个规律：FAT高HEART DISEASE也高。WINE低HEART DISEASE也低。

myice

过去：法国（FAT一样，WINE高，HEART DISEASE低）

美国（FAT一样，WINE低，HEART DISEASE高）

现在：WINE的差别已缩小，却HEART DISEASE没缩小。

B说美国的FAT没变，法国的FAT增加点，既然法国的FAT增加，HEART DISEASE也应增加，它和美国在HEART DISEASE方面的差距应缩小。但原文要你解释的是没缩小。

myice

GWD-9-Q20:

Which of the following most logically completes the reasoning?

Either food scarcity or excessive hunting can threaten a population of animals. If the group faces food scarcity, individuals in the group will reach reproductive maturity later than otherwise. If the group faces excessive hunting, individuals that reach reproductive maturity earlier will come to predominate. Therefore, it should be possible to determine whether prehistoric mastodons became extinct because of food scarcity or human hunting, since there are fossilized mastodon remains from both before and after mastodon populations declined, and ______.

A. there are more fossilized mastodon remains from the period before mastodon populations began to decline than from after that period与原文内容重复，无新信息，更多的化石也是这些信息。

B. the average age at which mastodons from a given period reached reproductive maturity can be established from their fossilized remains 和原文对应，原文讲的都是这两种因素对生育时间的影响。

C. it can be accurately estimated from fossilized remains when mastodons became extinct与灭绝时间无关

D. it is not known when humans first began hunting mastodons与人的狩猎无关

E. climate changes may have gradually reduced the food available to mastodons与气候无关

myice

GWD-9-Q12:

A mosquito bite can transmit to a person the parasite that causes malaria, and the use of mosquito nets over children’s beds can significantly reduce the incidence of malarial infection for children in areas where malaria is common. Yet public health officials are reluctant to recommend the use of mosquito nets over children’s beds in such areas.

Which of the following, if true, would provide the strongest grounds for the public health officials’ reluctance?

A. Early exposure to malaria increases the body’s resistance to it and results in a lesser likelihood of severe life-threatening episodes of malaria.

B. Mosquito bites can transmit to people diseases other than malaria.

C. Mosquito nets provide protection from some insect pests other than mosquitoes.

D. Although there are vaccines available for many childhood diseases, no vaccine has been developed that is effective against malaria.

E. The pesticides that are most effective against mosquitoes in regions where malaria is common have significant detrimental effects on human health.

[A]

 

 

myice

GWD-9-Q14: 错了

The Eurasian ruffe, a fish species inadvertently不注意地 introduced into North America’s Great Lakes in recent years, feeds on the eggs of lake whitefish, a native species, thus threatening the lakes’natural ecosystem. To help track the ruffe’s spread, government agencies have produced wallet-sized cards about the ruffe. The cards contain pictures of the ruffe and explain the danger they pose; the cards also request anglers to report any ruffe they catch.

Which of the following, if true, would provide most support for the prediction that the agencies’ action will have its intended effect?

A. The ruffe has spiny fins that make it unattractive as prey.

B. Ruffe generally feed at night, but most recreational fishing on the Great Lakes is done during daytime hours.

C. Most people who fish recreationally on the Great Lakes are interested in the preservation of the lake whitefish because it is a highly prized高奖赏的 game fish.供垂钓的鱼

D. The ruffe is one of several nonnative species in the Great Lakes whose existence threatens the survival of lake whitefish populations there.

E. The bait that most people use when fishing for whitefish on the Great Lakes is not attractive to ruffe.

 

 

myice

[C] A的意思为RUFFE不是好猎物。和原文预测无关。C说在G湖的钓鱼的多数人喜欢钓WHITEFISH。又因为RUFFE以WHITEFISH的蛋为食，所以WHITEFISH多的地方RUFFE也一定多，这样钓到RUFFE的可能性就很大，跟踪RUFFE的行踪的目标更易达到，所以支持预测。

ruffe的确有害，但是政府现在的目的不是要灭了它，而是首先要track the ruffe's spread,政府不可能每天派一大笔人在湖边等着ruffe所以最有效的办法就是要人们参与进来积极举报鱼的行踪，所以政府作了很多小卡片让人们来带在身边，一是让人们了解这种鱼是什么样子，二是了解它有什么害处。但是这个计划的一个弱点就是如果人们都不配合，也就是拿了卡片就扔，看到ruffe也不通知政府，这个措施对于track the ruffe's spread的目的，显然是没有效果的！所以c加强说，因为人们有兴趣保护whitefish，那么当他们看到卡片说ruffe会残害whitefish的卡片会比较容易会配合政府来track ruffe。所以这个措施也就比较likely to have its intended effect==>to track the ruffe's spread.

BE是削弱，直接看到C的preservation of whitefish就可以选了