单项选择题

But there is at least one prediction that can be made with assurance.()

A. 但最终还是要做出一个明确的选择。
B. 但至少要做出一个有把握的预测。
C. 但至少存在一个明确的预言。
D. 但至少可以有把握地做出一个预言。

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单项选择题
We cannot help asking if sandstorm is a pure natural phenomenon over which we have no control.()

A. 我们禁不住要问沙尘暴是否是一种纯自然现象,而我们对它无法控制。
B. 如果沙尘暴是一种纯自然现象,我们不禁要问这个问题是否不能解决。
C. 我们不禁要问沙尘暴是否是一种人类无法控制的纯粹的自然现象。
D. 如果沙尘暴是一种纯自然现象,对于我们能否控制它我们也不知道。

单项选择题
Advertising can persuade the consumer to buy worthless products by()

A. stressing their high quality
B. convincing him of their low price
C. maintaining a balance between quality and price
D. appealing to his buying motives

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