Peter, Jack, Sam, Bob and John are on our school basketball team. It is one of ____ most popular teams in our city. ____ Sunday, they're going to play against No. 20 Middle School basketball team. Let me introduce(介绍) the five ____ ( play).

    Sam is the ____ (thin), but he runs the fastest. Peter is the tallest. He can ____ the highest, too. He can throw the ball into the basket ____ (easy). Bob is a new player but he is also a great player. ____the five boys, Jack is the best player. In the last basketball match, he ____ (get) twenty points for his team. John is the heaviest, he is 65kg. He runs slower ____ the other boys. But he is good at ____ (stop) the players of other team from getting near the basket. It's really a strong team. Are they going to win? Let's wait and see!

1933年5月12日（罗斯福）发布《农业调整法》。强制农民减少耕地面积和牲畜繁殖，对超过国家规定生产定额的产品课以重税。这一做法的目的是（      ）

利用基因工程技术将生长激素基因导入绵羊体内，转基因绵羊生长速率比一般的绵羊提高30%，体型大50%，在基因操作过程中生长激素基因的受体细胞最好采用 （   ）