如图表示人体细胞新陈代谢与外界环境之间的关系,请据图回答有关问题:
(1)人体的二氧化碳含量最高的地方是[____ ]____
(2)C过程被称为____ ,是通过____ 实现的.
(3)尿液的形成必须经过____和____ 两个重要生理过程.
(4)食物中的淀粉在小肠中被分解成____ 才能被人体吸收.
完成对话A: How was your vacation, Fred?B: ____ .A: ____ ?B: I went to the U.S. with my parents.A: Cool! ____ in the U.S.?B: First we went to Los Angeles(洛杉矶). My uncle lives there. Then we went to New York to see my cousin.A: ____ ?B: It was a little warm but sunny.A: Did you see any movie stars in Los Angeles?B: No, but I saw Tom Cruise in New York. He was at a restaurant! I got his autograph.A: Wow! That’s great! What else did you do in New York?B: Hmm…Oh yeah, I also went to Central Park.____ there! .
培育“试管山羊”的基本过程如下图所示,若要培育成功,下列叙述正确的是( )
Let's ________ closer. ( )