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  3. Native to South America, when peanuts were introduced to Africa by Portuguese explorers early in the sixteenth century they were

Native to South America, when peanuts were introduced to Africa by Portuguese explorers early in the sixteenth century they were

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问题 Native to South America, when peanuts were introduced to Africa by Portuguese explorers early in the sixteenth century they were quickly adopted into Africa’s agriculture, probably because of being so similar to the Bambarra groundnut, a popular indigenous plant.
选项 A、when peanuts were introduced to Africa by Portuguese explorers early in the sixteenth century they were quickly adopted into Africa’s agriculture, probably because of being
B、peanuts having been introduced to Africa by Portuguese explorers early in the sixteenth century and quickly adopted into Africa’s agriculture, probably because of being
C、peanuts were introduced to Africa by Portuguese explorers early in the sixteenth century and were quickly adopted into Africa’s agriculture, probably because they were
D、peanuts, introduced to Africa by Portuguese explorers early in the sixteenth century and quickly adopted into Africa’s agriculture, probably because they were
E、peanuts, introduced to Africa by Portuguese explorers early in the sixteenth century and having been quickly adopted into Africa’s agriculture, probably because they were
答案C
解析 Grammatical construction; Logical predication
The opening adjectival phrase Native to South America must be followed immediately by the noun it modifies: peanuts. The sentence makes two main points about peanuts—they were introduced to Africa and they were quickly adopted there. The most efficient way to make these points is to make peanuts the subject of two main verbs: were introduced and were... adopted.
A When incorrectly intervenes between the opening adjectival phrase and the noun it modifies, and it is also unnecessary because early in the sixteenth century explains when. Because of being is wordy and indirect.
B This version of the sentence has no main verb, since having been introduced and quickly adopted both introduce adjectival phrases.
C Correct. The sentence is properly structured and grammatically correct.
D This version of the sentence has no main verb because introduced and adopted both function as adjectives.
E This version of the sentence has no main verb because introduced and having been ... adopted function as adjectives.
The correct answer is C.
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