阅读下面短文,从所给选项中选出能填入空白处的最佳选项,使短文通顺,结构完整,其中有一项是多余选项。
Weather is one of the things we are unable to control. (1) But if we study the signs around us correctly, we can tell the changes of weather. This way of telling what the weather will be like on the following day or two is called weather forecasting.
Sometimes distant objects such as hills seem to be very clear and near. This is a sign of much water vapour(水蒸气) in the air. (2)
(3) With the coming of wet weather, people will feel uncomfortable in their bones. Some birds fly high if fine weather is coming but they fly near the ground if rainy or stormy weather is on the way.
(4) Such rainbows always come in the evenings and the following days will become clear. If the stars twinkle(闪烁) clearly at night, then fine weather will continue. If frogs appear in the morning, just about sunrise, then the day will be warm and fine. But if frogs appear in the evening and call frequently(频繁地), we should be careful. (5)
A. No man can change it.
B. So rain will probably come.
C. Because rain is coming the next day.
D. People's pain in their bones means something too.
E. The weather can be easily known from insects.
F. A rainbow during rainy days is a sign of fine weather.

1. A 2. B 3. D 4. F 5. C

1. 空前句意为“天气是我们无法控制的事物之一”，A选项“没有人可以改变它”承接上文，进一步说明天气不受人为控制的特点，符合语境。
2. 空前说明空气中有大量水蒸气，这是降雨的前兆，B选项“所以雨很可能就要来了”顺承前文的征兆推导结果，逻辑通顺。
3. 空后提到潮湿天气来临前人们骨头会感到不适，D选项“人们骨头的疼痛也有预示作用”引出下文关于体感预判天气的内容，衔接自然。
4. 空后描述彩虹出现预示后续天气转晴，F选项“雨天出现的彩虹是好天气的征兆”对应后文的彩虹相关内容，匹配语境。
5. 空前说明青蛙在夜间频繁鸣叫时我们需要留意，C选项“因为第二天就要下雨了”解释需要小心的原因，符合逻辑。
多余选项E的内容是通过昆虫判断天气，全文没有相关对应描述，为多余项。