条件状语从句if的用法 — 英语选择题
题目
温室的规则是:温度达到30°C时,警报就会响。哪句话表达了这条规则? A. If the temperature reaches 30°C, the alarm will sound. B. If the temperature will reach 30°C, the alarm will sound. C. If the temperature reaches 30°C, the alarm would sound. D. Unless the temperature reaches 30°C, the alarm will sound.