2019~2020学年人教版必修二Unit 4 Wildlife protection learning about language课时作业
2019~2020学年人教版必修二Unit 4 Wildlife protection learning about language课时作业第3页

  B. How sea turtles find their food.

  C. The dangers faced by sea turtles.

  D. How young turtles become adults.

五、七选五(每小题3分,共15分)

The millipede (千足虫)

  Forest life

  30. We enjoy watching television programs about bears, bats or monkeys. We knew a lot about their lives: how they find food or what they do at different times of the year. But what about smaller animals that are more difficult to see or film?

  31. A French scientist, Francois-Xavier, Joly, is studying one of them - the millipede.

  The importance of leaves

  When leaves begin to die in autumn, they turn from green to yellow and fall from the trees.

  32. Life in the forest needs these nutrients - without them, plants could not grow and so there would be no food for other animals.

  Food on the forest floor

  Some living things, like mushrooms, break the leaves into smaller pieces and eat them. In a few months there is nothing left of them. But for mushrooms, not all trees are the same. Mushrooms prefer some types of leaves to others. This means that some leaves take much longer to break down than others, sometimes years. So what happens to these? 33.

  More on the menu

  The millipede also likes leaves and it eats any type. But when it has finished, it produces waste. This waste then becomes the food of mushrooms. When mushrooms eat leaves they choose only certain types - but when they eat waste, they will eat any kind. 34.

  So next time you are walking through a forest, remember that something may be having a meal right under your feet!

A. This is where the millipede can help.

B. However, not all leaves are equally rich.

C. Millipedes do amazing things in the soil in our forests.

D. Forests are amazing places, and so are the animals that live in them.

E. As they break down on the ground, nutrients are returned to the soil.

F. Many small animals that live in forests are very important for the soil.

G. This is how the millipede turns dead leaves into food for others and helps life continue.

六、书面表达(共35分)

  众所周知,许多野生动物面临灭绝。请写一篇有关保护野生动物的文章。

  主要内容:1. 野生动物濒临灭绝的原因;2. 拯救措施。

  注意:1.词数100字左右;

   2.可以适当增加细节,以使行文连贯;

   3.书写工整。