Which of the following was NOT mentioned in the passage as a source of

Câu hỏi :

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions

A. printed matter

B. talks with experts

C. a research expedition

D. letters from scientists

* Đáp án

C

* Hướng dẫn giải

Đáp án C

Thông tin ở những câu gần cuối đoạn 2: Carson consulted no less than 1,000 printed sources. She had voluminous correspondence and frequent discussions with experts in the field.

Chỉ có C là không được nhắc đến

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