题干

如图A﹣E示意人体不同的结构层次,下列说法错误的是(  )

A:人体的生长发育是从A﹣﹣受精卵开始的

B:A通过分裂、生长、分化形成组织﹣﹣D

C:人的大脑主要由神经组织构成,植物体的输导组织具有运输营养物质的作用

D:人体具有而植物体没有的结构层次是系统

上一题 下一题 0.0难度 选择题 更新时间:2019-01-07 09:33:50

答案(点此获取答案解析)

B

同类题4

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

    I was diagnosed with allergies (过敏反应) when I was a little kid. Other than family, no one truly knows I have allergies, although I have to tell people it's allergies when my eyes start to tear up. ____ Sometimes my friends just tease in a friendly way.

    ____I look like a normal kid. I don't mind telling people about my allergies—after all, it's normal to have them. Having allergies hasn't affected my self-confidence.

    ____For example, I am a big traveler and I would enjoy going to see the cherry blossoms in Washington, D. C. But when I come anywhere within a 10-foot range of cherry blossoms it feels like I lose almost all my senses! Even though it's only temporary, I still feel miserable.

    My allergies haven't stopped me from traveling when I can, though. My class trip was to Williamsburg in Virginia. At first it was supposed to be during cherry blossom time, and that had me worried. ____

    I've had to rethink some of my dreams, too. Since I'm allergic to animals with fur, I may need to adjust my hopes of being a veterinarian (兽医) or working in an agricultural-science department. ____

    Now I have learned to deal with my allergies and even see the good side sometimes. Having allergies has taught me not to be prejudiced about people's health conditions.

A. I do get made fun of.

B. My allergies have been getting better.

C. If I don't take my medicine I can get really bad breath.

D. You can't tell by looking at me that I have a health condition.

E. Fortunately, it was changed to February, so I went and had the best time!

F. But I'm interested in so many things and there are plenty of other careers out there!

G. Sure, my allergies have held me back from doing some of the things that I love to do.