两栖类是脊椎动物由____ 向____过渡的类型。

阅读下面短文，掌握大意，然后从16~35各题所给的A、B、C、D四个选项中，选出最佳选项。
    “Are you going shopping today?” my husband, Roy, asked when I answered the telephone. “I 1 to,” I said. Thanksgiving was only a couple days away. My money was2and I knew I had to be creative in my shopping that day.
    For a few seconds, Roy sat 3on the other end of the line. The nervousness gradually increased under the wordlessness, which I couldn't wait to break through. “Why do you ask?” I whispered, 4what he might say.
    “Nancy, there's a family with six kids that will not have anything to5for Thanksgiving. The little one is only five years old. While you're at the store could you 6 buy something for them?” My head began to spin when I was thinking about the fifty dollars I had 7 for our family's Thanksgiving dinner.
    In the back of my mind I 8 the hungry guests who would be coming to our house for dinner. I put my head down on my desk, already feeling 9. There's no way possible, I thought. But the compassion (怜悯) I heard in my husband's 10struck a nerve inside me.
    I replied, “11but only if God helps.”
    I finished my work and12 all the way to the nearest grocery store. I entered the parking lot and noticed a big 13in the grocery store window: Turkeys---14 cents a pound. “Thank God!” I said to myself.
    I went inside, but when I read the sign my heart 14. “Limit one.” But I needed at least two so I decided to find the manager. I 15 the problem. He made an exception. To my 16, I had enough money. I was even able to purchase a package of cookies for the five-year-old child who had 17 my heart, even though I had never met her.
    Later that afternoon, Roy and I made a special delivery to a home 18 with children of all ages. I will never forget the 19on the six kids' faces. By far, that was the greatest 20 of my life.

阅读下面短文，根据其内容，从方框中选择适当的单词填在标有题号的空白处，使语意通顺、完整．（每空一词，切不可重复使用）

moving    direction    fall      hands      where    protect     yourself against    as        up     possible     easily     them  thing   ground

 Make yourself know the type of  ____  you are standing on. Wet or uneven（不平坦的）ground can cause you to ____  down in a crowd of moving people.

 If you find ____   in the middle of a moving crowd, you must be careful. Do not walk ____  the moving direction and do not stop or sit down, because you could get trampled (踩踏)  ____ Instead, move in the same ____  of the crowd. Keep your____  up by your chest（胸部）to protect your chest. If you fall down, get up quickly, If you can't get  ____  , ask someone to pull you back up. If you have kids, lift  ____  up.

 If you fall and cannot get up, keep on  ____   in the same direction of the crowd. If that is not  ____   , then cover your head with your arms.

 Try to get away from hard things in a crowd. If you're pushed against them, ____   a result, you may be hurt badly.

 We should learn to ____  ourselves. Stay away from the crowd.

Remember: Whatever you do, safety is first!

请选出下列说法错误的一项(    )

如图是用厚刻尺测量木块的长度，正确的测量图是（　　）