问题 单项选择题

不久前,研究人员发现,把健康成年小鼠置于黑暗中一周后,它们辨别音高的能力也可显著提高。此前,科学界通常认为这种变化主要发生在未成年阶段,且需要更长的时间。这表明()

①科学的价值在于造福社会

②认识与实践的统一是具体的历史的

③真理具有反复性和相对性

④认识的真理性需要不断经受实践的检验

A.①②

B.③④

C.①③

D.②④

答案

参考答案:D

阅读理解

阅读理解    

    The giant panda is one of the most popular animals in the world. A giant panda can grow up to 1.5       meters long and weigh up to 160kg. People think the giant panda is very lovely. ① So it is not surprising    that the World Wide Fund for Nature chose the giant panda as its symbol. The WWF tells people about   animals that they are in danger and raises money to save them.

    The giant panda only lives in the wild in China. In the early 1980s,were only 1,000 left in the wild, the    main reason why pandas are endangered is that the area where panda can live has become smaller.

    The WWF works to help giant pandas in the wild in many ways. One of the ways that helps them is to   increase the size of panda reserves (自然保护区).Some reserves need to be joined together by          planting bamboo between them to make “corridors” . These are paths that lead from one reserve to          another.No one may harm the pandas in these areas. The corridors let pandas move from one habitat (栖息地) to another to look for food.②People are working very hard to make sure the giant panda does not die out.

1. How long and heavy can a giant panda grow to be?

    ___________________________________________.

2. 将文中画线的句子①改为被动句。  

      So it is not surprising that _______________________  World Wide Fund for Nature. by the            World Wide Fund Fund for Nature.

3. Why are the giant pandas endangered?

    ___________________________________________.

4. Give a way to help the giant pandas in the wild ,please.

    ___________________________________________.

5. 将文中画线的句子②翻译成中文。

    ___________________________________________.

单项选择题