图1表示某生态系统中碳循环的示意图,甲、乙、丙、丁代表生态系统的4种成分。图2表示能量流经第二营养级的示意图,A表示该营养级的摄入量。 (1)
------ When shall we meet again? ------ Make it ______day you like. It’s all the same to me. A. one B.any C.another D.a
19.依次填入下面一段文字横线处的语句,衔接最恰当的一组是(3分)( ) 如何弥合社会信任链条,是摆在微博面前的现实问题问 。
为了测定乙醇的结构式,有人设计了用无水酒精与钠反应的实验装置和测定氢气体积的装置进行实验。可供选用的实验仪器如下图所示。 请回答以下问
Why are different people fond of different colors? The answer depends largely 61 cultural values. To the Egyptians, green was a color 62 represented the hope and joy of spri
A Korean wave is sweeping across China, with many Chinese women worshiping South Korean actors Kin Soo-hyun and Lee Min-ho as demigods(偶像). Chinese netizens(网民)always have different opi
单项选择填空 —Guang’an is a beautiful city, isn’t it? —Yes. There are about two visitors here every week. A. thousands of B. thousands
在2010年3月5日召开的十一届全国人大第三次会议上,《全国人民代表大会和地方各级人民代表大会选举法修正案》提交大会并审议通过。我国现行的人