题干

下面的动物与其气体交换部位对应错误的是(  )

A:牛——肺

B:鲫鱼——鳃

C:青蛙——肺与皮肤

D:家鸽——肺与气囊

上一题 下一题 0.0难度 选择题 更新时间:2018-08-25 07:38:44

答案(点此获取答案解析)

D

同类题3

阅读理解

Reader's Travel Photography Competition

    This month's images include some original and brilliant shots. The overall 2018 winner will receive a $200 holiday ticket and go on a 16-night wildlife holiday.

Doug Scott

Guess what the young monk is doing! He is playing with his smart phone in secret.

PAUL GOLDSTEIN JUDGE: Smart phones have taken over the world. Even without the photographer's caption there is composition, humor and fun here. To the outsider, he could be having a short sleep, or lost in meditation. My eyes stop on this for a while and the admission of smart phones cannot be changed in any corner of the world.

Eloise Campbell

I was able to follow this young eagle hunter and his eagle in the mountains of Mongolia and watched how it was trained. Though the bond between them was new, to me it seemed unbreakable—they were coexisting peacefully with each other.

Adam Cunningham White

This shot grasps the moment when we had to change direction with this group of around 300 migrating reindeer in northern Sweden. They can become confused very quickly, making this moment risky. They could run in different directions immediately, making it difficult to get them back into a group.

Nick Dale

This is a close-up of the left eye of a zebra.

PAUL GOLDSTEIN JUDGE: Perfect, I have seen these before but rarely done with this competence. The depth of field is exactly right. The bold cropping and blue to the left make people interested. Zebras are easy to photograph but not often this well.

同类题4

完形填空

    The Fitting-in of Suzy Khan

    The first time I saw Suzy Khan, I knew I had to help her. She was really small for her age of 12. The boy in my class often1about her and laughed their heads off. She would open a book, pretending to read, with tears dropping on the open page.

    All I knew was that she was an orphan(孤儿) from Africa. She had just been adopted by a family in town who2that the best way for her to learn American ways of life was to be with American kids. I looked down at this 3girl and promised myself that somehow I would help her.

    But how could I help her4in with us? There had to be a5

    One day, when I went into the classroom, I saw that Suzy had6her geography book to a picture of a train, and in her notebook, she had made a(n)7copy.

    I was surprised and thought that she could do something in the coming 8show. So, I took her to see the art teacher, Miss Parker, and showed her what Suzy had 9"Why, it's wonderful," said Miss Parker, who then showed us a poster she had painted10the talent show. "I need more of these, but I just don't have enough11Could you help me, Suzy?"

    On the day of the talent show, Suzy's12were everywhere—all over the hall and all over the school, each one different.

    "And finally," said Mr. Brown, the schoolmaster, at the end of the show, "we have a(n)13award. I'm sure you've all noticed the wonderful posters." Everyone nodded. "One of our own students14them."

    I could hear everyone whispering. "Who in our school could draw15well?"

    Mr. Brown waited a while before saying, "16this student worked so hard on the posters, she deserves a17 too. Our mystery(神秘) artist is our new student—Suzy Khan!"

    Mr. Brown thanked her for all the wonderful posters and gave her a professional artist's set. "Thank you," she cried.

    I18 at that time when I was looking at her excited face, she'd probably never19anything in her whole life.

    Everyone started to20their hands. Suzy Khan gave them a shy smile and the applause was deafening. I knew then Suzy was going to be all right.