1.Bears build up fat stores throughout the summer and fall to have enough energy(能量) to last them through their winter sleep.
2.They gain good reputation among Chinese for their learned knowledge and great care for ordinary (普通的)people.
3.I don’t believe what you said , but if you can prove(证明)it , you may be able to convince me.
4.The palace caught fire three times in the last century, and little of the original(原来的)building remains now.
5.Aliens’ visiting Earth is controversial but what happened in some places is hard to explain，leaving people puzzled about these strange phenomena(现象).
6.Little Jim was only too ready to perform on the stage(舞台), seldom，if ever，refusing them when someone asked him to do.
