第四節(jié)　猜測詞匯題真題練習(xí)

（1）

At very high levels，radiation can kill an animal or human being outright by killing masses of cells in vital organs.But even the lowest levels can do serious damage.There is no level of radiation that is completely safe.If the radiation does not hit anything important，the damage may not be significant.This is the case when only.a few cells are hit.And if they are killed outright，your body will replace the dead cells with healthy ones.But if the few cells are only damaged，and if they reproduce themselves，you may be in trouble.They reproduce themselves in a deformed way.They can grow into cancer.Sometimes this does not show up for many years.（1998年第一篇）

Question：

The word“significant”in this paragraph most probably means＿＿＿＿.

A.responsible　　B.meaningful　　C.fatal　　D.harmful

（2）

There are hidden factors which scientists call“feedback mechanisms”.No one knows how they will interact with the changing climate.Here’s one example：plants and animals adapt to climate change over centuries.At the current estimate of half a degree centigrade of warming per decade，vegetation（植物）may not keep up.Climatologist James Hansen predicts climate zones will shift toward the poles by 50 to 75 kilometers a year—faster than trees can naturally migrate.Species that find themselves in an unfamiliar environment will die.The 1，000-kilometre wide strip of forest running through Canada，the US.SR and Scandinavia could be cut by half.Millions of dying trees would soon lead to massive forest fires，releasing tons of CO₂ and further boosting global warming.（1998年）

Question：

“Feedback mechanisms”in the paragraph most probably refers to＿＿＿＿.

A.how plants and animals adapt to hidden factors

B.how plants and animals interact with the changing climate

C.how climate changes

D.how climate zones shift

（3）

The pro-hanging lobby uses four main arguments to support its call for the reintroduction of capital punishment.First，there is the deterrence theory，which argues that the potential murderers would think twice before committing the act if they knew that they might die if they were caught.The armed bank robber might，go back to being unarmed.（1997年第一篇）

Question：

In this paragraph，“deterrence”means＿＿＿＿.

A.proclamation　　B.protest　　C.protection　　D.prevention

答案及解析

（1）

D.詞義猜測題。可套用公式正確答案≈原文中對該詞的解釋。該詞出現(xiàn)在該段第四句中。通過閱讀原文可以看出“significant”用在這里是來表示所受傷害的大小，因此A、B兩選項(xiàng)是不相干選項(xiàng)；C選項(xiàng)程度過重與原文意思不符；D選項(xiàng)與原文意思、程度均符，因此是正確答案。

（2）

B.詞義猜測題?？商子霉秸_答案≈原文中對該詞的解釋。根據(jù)題干中心詞“Feedback mechanisms”回到第一段段首。從第一句話可知，該詞指的是一些隱含的因素（hidden factors）。第二句話“No one knows how they will interact with the changing climate.”中的“they”代指的就是該詞。可據(jù)此推出該詞指的是一些和變化的氣候相互影響的隱含因素。從第三句所舉的用來解釋的例子中可以看出該詞主要是針對動(dòng)植物而言，因此根據(jù)這三句話所給出的解釋，正確答案是B。

（3）

A.詞義猜測題。原文中含有該詞的那句話是在說明人們研究純科學(xué)的目的完全是為了理解事物本身、為了滿足自身的求知欲，因此通過分析上下文可知正確答案應(yīng)是A選項(xiàng)。而且根據(jù)“quench man’s thirst for knowledge”這個(gè)短語的搭配也可猜出quench的含義。