Ⅰ.单词拼写 1.Many for protecting rare animals have been built recently. 2.The grassland is an important (栖息地) for many wildlife. 3.Dinosaurs have been for millions of years. 4.My profession is to be a doctor. 5.He against cancer for two years. 6.You will your health if you smoke.

reserves

habitat

extinct

ideal

struggled

endanger