孔子使埋狗

    仲尼之畜狗死，使子贡^①埋之，曰：“吾闻之也，‘敝帷^②不弃，为埋马也；敝盖不弃，为埋狗也。’丘也贫，无盖，于其封^③也，亦予之席，毋^④使其首陷^⑤焉。”《礼记·檀弓下》

【注释】①子贡：孔子的学生。②敝帷：破了的帘幕。敝盖：破了的车盖。③封：包裹。④毋：不要。⑤陷：直接埋在土里。

a＋b=b＋a

组成生物体最基本的元素是(    )

(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.