请你修改：
（1）、①“鲁迅是世界文毫之一，他长相平平，却有一双锐利异常、能洞察世事的眼睛。” 
此句有一处错误，请改正。             改为               
②在工具书中查划线的“洞”字有4种解释：a.窟窿；b.深刻、透彻；c.无堵塞，可穿通；d.某些场合代替数字“0”。在这里应该取           项解释。（写序号即可）
（2）、用规范的修改符号在原句上修改病句。
 
①全国各地加大了对醉酒驾车的惩罚力度，为的是避免那些骇人听闻的交通事故不再发生。
②我们要把改善民生、保障民生、关注民生作为一切工作的目的和出发点。

如下图为某地等高线示意图，图中，有一处适合户外攀岩运动。运动员从崖底攀至陡崖最高处，高差可能有（    ）

  -Good idea! That sounds _________.

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                                                                Table manners in America

        Don't circle your plate with your arms. If you do so, you will become the focus  (焦点)  of the table. Everyone would wonder, "Is there anything wrong with the food?" This may give a wrong message that you don't like the food or something like that.

       Don't push the plate back when finished. Leave it where it was. Do you want to let the hostess (女主人)(1)_________(know ) that you've just done a labours。

        Don't lean (倚靠) back and say "I'm through" or "I'm full". Just put the fork and knife across the plate. That's all. 

       (2)Don't cut up everything before you start to eat. Cut only one or two bites (块) at a time. Never take a huge mouthful of anything. Do you want to show how hungry you are? Don't do that. It's not so good.

        It's never good to reach across the table for anything. If the thing you want is not at hand, simply ask the nearest person for help, like "(3) Mrs. Smith, could you pass me the dish?"

The package_______ a book and five CDs and the course________ many topics