问题描述：
It may seem strange that ice itself sometimes can p____crops from frost! Some growers spray(喷) their crops with water on a very cold night. Water freezes(结冰) quickly on the plants and then a strange thing h____. As long as ice stays wet, it can't get colder than 0℃, a t____many plants can be alive. If the ice became dry, it might drop many degrees lower, and the plants may be in d____. But spraying water on the ice a____, the growers keep it from going below 0℃ even if the air is much colder. This may be amazing but it s____the plants. This strange kind of “ice blanket” w____only on plants that are strong enough.
最佳答案： 【分析】1. protect...from“保护，（使）不受伤害”。冰冻本身能保护农作物免受霜冻的伤害，这似乎很奇怪。
2. happen“发生”，全文用一般现在时，主语是a strange thing，所以动词用单数happens。
3. 前面提到“不可能比0度低”，可知此处谈论温度，填temperature。
4. in danger“处于危险中”。如果冰变干，就有可能会降很多度，植物就会陷入危险中。
5. 上文中已提到Some growers spray(喷) their crops...，此处填again“再次”，“再次将水喷在冰上”。
6. save“挽救，拯救”，主语为it，故填单数saves。这或许很令人惊讶，但是却挽救了农作物。
7. work“起作用，奏效”。这种奇怪的“冰毯”只对足够强壮的植物起作用。
