题干

据材料和“太阳系的模式图”,回答下列问题.

据英国《卫报》2013年9月26日报道,美国宇航局(NASA)的“好奇”号(Curiosity)火星车在火星表面的土壤中发现了水分子,这些水可能成为人类未来登陆火星后的重要资源.“好奇”号首先铲起轮子下的火星土壤,经过筛选后将一小部分样本放入烤箱,加热到835摄氏度后,就发现了水.此外,被加热的土壤还释放出了二氧化硫、二氧化碳以及氧气.“好奇”号的一个主要任务就是在火星上寻找可居住的证据,科学家认为,火星上可能曾有生命存在,火星表面曾经有大量流动水,但现在已经消失.

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同类题5

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.