GMAT/留學申請專業顧問 Donz 之資訊交流園地

Explain 的題型為 - 題目有現象需要解釋，而此現象通常是無法理解或是矛盾的情形 (所以才需要解釋)。

此題型沒有太多新的作題策略，和 weaken 題作法差不多，反向思考即可。

一題範例:

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.

簡單敘述題意: 蚊帳可以減少小孩感染瘧疾的機率，但衛生中心傾向不推薦使用。

作題策略: 選出解釋為何衛生中心不推薦使用的原因即可。

A. 提早得到瘧疾，可增加身體的抵抗力，而降低瘧疾造成致命的可能性 - 解釋了為何衛生中心不推薦小孩使用的原因 - 是為了讓小孩提早接觸瘧疾，早點產生抗體以免造成致命威脅，正確答案。

B. 蚊子咬傷可以傳染不止瘧疾之外的疾病 - 加強應該使用蚊帳的可能性，並無解釋，為錯誤答案。

C. 蚊帳可以保護人體不被除了蚊子之外的一些昆蟲咬傷 - 加強應該使用蚊帳的可能性，並無解釋，為錯誤答案。

D. 即使有些小孩疾病的疫苗已經開始使用，而瘧疾目前還沒有有效的疫苗 - 加強應該使用蚊帳的可能性，並無解釋，為錯誤答案。

E. 對蚊子有效果的殺蟲劑會對人體產生傷害效果 - 加強應該使用蚊帳的可能性，並無解釋，為錯誤答案。

由此題可知，碰到 explain - 解釋矛盾的題型，只要用類似 weaken 反向的方式處理即可。