小芳将番茄幼苗移栽后，开始几天幼苗出现了萎蔫现象．造成这一现象的主要原因是（　　）

俗语“龙生龙，凤生凤”及“一猪生九子，连母十个样”中描述的是生物现象是（    ）

①遗传  ②变异  ③进化 ④繁殖

完型填空

Jerry is the kind of guy you love to work and live with. He is always happy and always has something 1  to say. When someone asks him how he is doing, he must reply, “If I   2 any better, I would be twins! ”

Jerry is an 3 manager because he has several waiters who have followed him around from restaurant to restaurant. The reason the waiters follow him is his 4 to life. He always  5 others. If a waiter is having a bad day, Jerry is there telling the waiter how to  6the positive side of the situation.

I was very curious(好奇的) about his positive attitude, 7one day I went up to Jerry and asked him, “I don’t get it! You are a positive person 8. How do you do it? ”

Jerry replied, “Each morning I 9  and say to myself, ‘Jerry, you have two choices(选择) today. You can choose to be happy or you can choose to be unhappy. ’I choose to be happy. Each time something bad happens, I can choose to be a victim (牺牲品)or I can choose to learn from it. I choose to learn from it. ”

Life is all about choices. Please remember: “You are what you  10  . ”