中新网2008年3月11日电,著名呼吸专家,中国工程院院士钟南山称SARS已经过去5年,仍不清楚其最终源头.SARS病毒与动物细胞相比最主要的不同是( )
____This is a picture of my uncle's family. These are my uncle and aunt. Those are their children(孩子),Li Ming and Li Ling.
____ Look at the picture. This is my friend. His name is Jack.
____Here's a photo of my family. These are my grandparents. Those are my parents. This is me.
____Look at this picture. This is my father and that is my mother.
____ Look at the three boys. They are my cousins and me.
A B C
D E
阅读下列材料,并回答问题。《吕氏春秋》记载:“通大川,决壅塞,凿龙门……疏三江五湖,注之东海,以利黔首。” 据此并结合下图回答下列问题: