第4题: [单项选择]Having two eyes, instead of one, is particularly useful for ______. A. seeing at night B. seeing objects far away C. looking over a wide area D. judging distances 参考答案:D 答案解析:此考题为细节题。根据文章第5段第1句Having two good eyes is important for judging distances,便可以肯定D正确。
第20题:[单项选择]<br><br><br/>A.coast<br/>B.shore<br/>C.ashore<br/>D.seaside<br/>参考答案:C 答案解析:[注解] A. coast B. shore D. seaside都是名词,这儿需要副词与come搭配,所以C. ashore是副词,是正确答案。