老PREP 28

28. (26003-!-item-!-188;#058&002229)

Polio, although it is eradicated in the United States, it continues elsewhere and is able to be

brought into the country by visitors.

(A) Polio, although it is eradicated in the United States, it continues elsewhere and is able to be

(B) Polio, although eradicated in the United States, it still continues elsewhere and can be

(C) Although still continuing elsewhere, polio has been eradicated in the United States and

could be

(D) Although having been eradicated in the United States, polio still continues elsewhere and is

capable of being

(E) Although eradicated in the United States, polio continues elsewhere and could be 

笔记的解释：

改为 evidence proved…
                            或evidence that have been proved…
                            

2) be able to do和can的区别:         前者表示拥有某种能力去做某事,强调的是能力;后者表示可能去做

某事,表现了一种可能性

(A)
                        句子结构复杂; be able to do表示拥有能力去做的意思,       用在此处不合适; it continues中的it多

余,因为去掉插入语although后,句子变为Polio it continues…,it和Polio重复

(B) it多余

(C)  随意替换Although的内容,      更改了原句的意思

(D) having been eradicated使用错误,应该去掉having been; is capable of being表示拥有某种能

力,用在此处不合适

(E)  正确,
                        整个句子简洁,表达清晰,用could表达一种可能性

句子结构: Although  eradicated…, polio continues…and could be brought…

Polio, although it is eradicated in the United States, it continues elsewhere and is able to be

brought into the country by visitors.

(A) Polio, although it is eradicated in the United States, it continues elsewhere and is able to be

A 错了是因为 be able to be done是一个逻辑上错误的表达。 able to是能做，是不能有被动式的 （被能做是什么意思呢？）

(B) Polio, although eradicated in the United States, it still continues elsewhere and can be

B 错了是因为Polio 和哪个 it构成了一个句子的双主语。 中间的哪个although....什么的是混淆你，希望你看不出来。

(C) Although still continuing elsewhere, polio has been eradicated in the United States and

could be

C 错了是因为continuing错了。 继续本身就是进行的动作，不能加ing

(D) Although having been eradicated in the United States, polio still continues elsewhere and is

capable of being

D 错了是因为Having been是一个典型的错误结构。 完全可以省略的。
                

(E) Although eradicated in the United States, polio continues elsewhere and could be 

谢谢解答。

也就是说如果都有错误，就选错误轻的那个。 虽然ets说：Although typically introduces a subordinate clause, which has a subject and a verb。(suddenly I could not type in chinese @_@) ETS used the word typically that meant although could introduce other than clause.