1.Petrol is refined from the ______ oil we take of the ground.(CET-4,2001.6)
　　2.By law, when one makes a large purchase, he should have ______ opportunity to change his mind.(cet-4,2000.6)
　　3.A lot of ants are always invading my kitchen.They are a thorough _____.(CET-4,2000.1)
　　4.By ______ computation, he estimated that the repairs on the house would cost him a thousand dollars.
　　5.In the end he ______ the most important points from his long speech.　　
　　[A]rude [B]rough [C]abstracted [D]adequate
　　[E]crude [F]nuisance [G]coarse [H]excessive
　　答案：
　　1.選[E]。[題意]汽油是由我們從地下開采出的原油提煉而成的。
　　2.選[D]。[題意]根據(jù)法律，當(dāng)一個人進行大宗購買時，他應(yīng)該有充分的機會改變主意�！　�
　　3.選[F]。[題意]我的廚房里總是爬進來許多螞蟻，真是討厭！
　　4.選[B]。[題意]經(jīng)過粗略計算，他估計修整這所房子需要一千美元。
　　5.選[C]。[題意]最后他從自己的長篇演說中總結(jié)出最重要的幾點。