Question

【题目】 some people claim they can predict the future, there is no scientific basis behind it.

A. As

B. Once

C. While

D. Because

Answer 1

【答案】C

【解析】As 意为“当……时，因为”；once意为“一旦”；while意为“虽然，尽管”；because意为“因为”。句意：尽管有些人声称他们能够预测未来，但其背后没有科学根据。