【单选题】Look! The pears _____ the stairs. [ ]
【单选题】狼曾经是令人憎恶和害怕的,人们主张把狼赶尽杀绝。但一些地方由于狼群消失,某些动物种群迅速繁衍,导致植被过度消耗,生态失衡,人类生存环境恶化。现在,人们对狼的作用有了新的认识,不少国家实施了 “ 引狼入室 ” 计划,以求保持生态平衡。这一事例说明 1 不同认识主体的共识才是真理性认识 2 解决实践中的新问题是认识发展的动力 3 纠正谬误、追求真理是认识的目的和归宿 4 因受主客观条件的制约,认识具有...
【单选题】I was _________ tired _________ I fell asleep as soon as I lay down.
【简答题】Some weak bridge may not ___ in an earthquake. A,stay up B. fall down C. fell down D. fell off
【简答题】A. The tree was broken. B. All the leaves fell down. C. One of the branches fell down. D. The tree was cut down.
【简答题】________ from the apple tree [A] It down fell [B] there it is needed [C] Down fell it [D] Fell it down
【单选题】在电力拖动系统中,属于通风机负载的是( )。
【单选题】—I was ______ tired ______ I fell asleep as soon as I lay down. —Oh, you need to have a good rest.