下列外来植物按照被引入中国的时间先后顺序排列，正确的是： ①菠菜②玉米③葡萄④胡萝卜
A.③②①④
B.③①④②
C.①④③②
D.①②③④
参考答案：B
解析：
解析
菠菜原产波斯，后传到北非,由摩尔人传到西欧西班牙等国，菠菜647年传入唐朝。玉米最早传到我国的是广西，时间是1531年，处于明朝嘉靖年间。葡萄是随着张骞通西域后传入中国。胡萝卜原产亚洲西南部，阿富汗为最早演化中心，栽培历史在2000年以上。公元10世纪从伊朗引入欧洲大陆，约在13世纪，胡萝卜从伊朗引入中国。因此，本题答案选B。
考点：医学与生命科学技术
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What to do if you don't feel popular? Try to take part in activities. Call your friends. Plan to do something. The worst feeling is staying home alone, because it makes you feel even more lonely. Try to make new friends. Choose friends __1__, not just because you think they're popular. And remember, making good friends takes time. Choosing a popular person to be friends with is okay. If they are nice. __2__ If you want to become friends with someone who's popular, don't make yourself into someone you are not just to impress that person. Be nice. Be friendly. Be outgoing. But don't overdo it! Talk to trusted friends if you are feeling really bad. Or you might want to write it down in a diary. Do something special for yourself. You could take __3__ of your friends, or collect their school pictures, and take a collage ( 拼贴画) to hang on your wall. This will __4__ you, when you are feeling unpopular, that you really do have friends. __5__ your own ideas. This suggestion might not work for everyone. What to do if you have a problem with your teacher? Talk to your parents, or another adult who will __6__ you and perhaps can help. Talk to your friends. Maybe they have had problems with the same teacher, too. Don't give the teacher a reason to have problems with you. Do your work, complete your task, attend the class __7__ and take notes. Maybe you just need to give the teacher a chance. Try to find out what the problem is. Talk to the teacher if you feel __8__ doing this. Don't be nasty (闹别扭), but express your concerns (关心). Listen to the teacher, as well. Just accept , the fact that you're not going to love all your teachers. |