Question

1. which of the following hypotheses is written correctly?

a) if a tennis ball is frozen, it wont bounce as high as one that is not frozen.
b) frozen tennis balls will not bounce as high.
c) if i freeze a tennis ball, then it will not bounce as high.
d) if i heat up a tennis ball it will bounce high.

Explanation:

假设句的结构为“如果（条件），那么（结果）”。A选项“如果一个网球被冷冻，它不会像一个没有被冷冻的网球弹得那么高”，逻辑合理；B选项“冷冻的网球不会弹得那么高”，缺少条件表述；C选项“如果我冷冻一个网球，那么它不会弹得那么高”，逻辑合理；D选项“如果我加热一个网球，它会弹得高”，逻辑合理。而B选项不是完整的假设句结构。

Answer:

B. Frozen tennis balls will not bounce as high.