单选题 The supply of electric power to the city and its neighboring districts has had to be______.
【正确答案】 C
【答案解析】解析：restrict vt．限制，约束。weaken v.(使)变弱，削弱。minimize vt．使减少(或缩小)到最低限度；极力贬低，对……作最低估计。slow v.(使)慢下来。