listen to the material carefully,although it is difficult and sometime you can't write down the correct answer.As long as you have tried,whatever you write down will be the harvest of yours.You should believe that only by accumulating little by little could you learn English welll.so come on.
If the earth gets hotter in the new century, what will happen to animals and the plants which animals depend on for survival? The question offers another way of looking at the “_______________”. People have talked about the general problem of “Global Warming” for some time. But they were usually worried about things _______________________.
Biologists and other scientists turn their attention to plants and animals at an important meeting that took place last October. They were reviewed evidence that plants and animals are sensitive to climate. __________________________and warmer temperatures returned to the northern latitudes, many species have migrated north.