我们每天看到太阳东升西落,是因为( ) A . 太阳和星星绕着地球转 B . 地球自西向东不停地自转 C . 地球自西向东绕着太阳转 D . 地球自西向东绕着星星转 答案:B. --- Only one of these books is worth _______. --- _______ is no wonder that you look so upset. A. to read; That B. of reading; This C. being read; There D. reading; It