题目

以下各项的一组风带中，风向相同的有 A．南半球的信风带与北半球的信风带 B．北半球的极地东风带与南半球的极地东风带 C．南半球的信风带与南半球的极地东风带 D．南半球的中纬西风带与北半球的中纬西风带 答案：C按要求改写句子。（1）They have watched Harry Potter twice. (改成否定句) They Harry Potter twice.（2）Simon has decided to go to Beijing. (改一般疑问句) Simon to go to Beijing?（3）Joe has been to Shanghai for a week. (对划线部分提问) has Joe been to Shanghai?（4）Mary has finished the homework for about twenty minutes.(改成同义句) Mary her homework twenty minutes.