把肯定句改成双重否定句。

①楚王尊重晏子了。

②我班被评为先进集体，全班同学都感到自豪。

(A) 根据句意，在答题卡标有题号的横线上，写出括号内所给单词的适当形式。
____ It was raining ____________ (heavy) at this time yesterday.
____ Our headmaster is the        (strict) with us among the teachers who teach us.
____ They looked at our pictures, but they didn't show us ___________ (they).
____ Our English teacher has offered us some useful _______________ (suggest). I think they will help us a lot in our English study.

为探究植物的生理作用，南南设计并实施了以下三个实验．请据如图分析（注：氢氧化钠溶液能吸收二氧化碳）：

中国自古以来就是一个多民族国家，中央政权历来重视对边疆少数民族地区的管辖。下图反映的是（    ）