2．下列哪类化合物中含有磷(P)元素

A．淀粉　 　　　B．核酸　　　 C．脂肪 　　　　D．丙氨酸

1．生命系统有许多结构层次，下列选项中属于种群层次的是

A. 君山岛上的全部生物　 　　　　　　B. 一块稻田中所有蝗虫的卵、幼虫和成虫

C. 洞庭湖湿地的全部动物及绿色植物 　D. 东方绿洲的全部生物及无机环境

5. 选C。通读全文，我们不得不为 The urchin 的行为所感动，他是一个好哥哥。文章就是讲述了他这样的一位好哥哥，C选项最合适。

4. 选C。The urchin 在坐过 Paul 的车后没有忘记弟弟，并且承诺也要给弟弟买一辆车，可见他对弟弟有着一份深深的爱。答案选C，而A、B、D三项与文章不符。

3. 选D。The urchin 要 Paul 把车停在他家门前后，立即扶着他残疾的弟弟出来，让他看看Paul的车，然后告诉弟弟他想为他做的事，所以他只是想告诉他弟弟他的愿望。

2. 选A。The urchin 指着 Paul 的车对他的弟弟说：“And someday I’m going to give you one just like it…”所以 the urchin 希望也能给他弟弟一辆车。

1. 选B。根据第2段中的 Paul answered, “Yes, my brother gave it to me for Christmas.” The boy was surprised.可知答案为B。

5. The best name of the story is _______.

A. A Christmas Present　　 B. Paul, a Kind-hearted Person

C. A Brother Like That 　　D. An Unforgettable Holiday Ride

[答案及解析]

4. We can find from the story that _______.

A. the urchin wished Paul to give his car to Buddy

B. the urchin wished to have a rich brother

C. the urchin had a deep love for his brother

D. the urchin’s wish came true in the end

3. The urchin asked Paul to stop his car in front of his house ______.

A. to show he had a rich friend

　　 B. to show his neighbors the big car

C. to let his brother ride in the car

　　 D. to tell his brother about his wish