In the experiment the scientist kept a watchful eye________the developments and - 高中英语试题 - 超级试练试题库

题目

题型：不详难度：来源：

In the experiment the scientist kept a watchful eye________the developments and recorded every detail.

A．in

B．at

C．for

D．on

答案

解析

题意：在试验中科学家密切注视着试验的进展并且记录着每个细节。keep an eye on…是习语，意为“密切注视…”。

核心考点

试题【In the experiment the scientist kept a watchful eye________the developments and 】；主要考察你对介词和介词短语等知识点的理解。[详细]

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