车辆后轮胎爆裂，车尾会摇摆不定，驾驶人应双手紧握转向盘，控制车辆保持直线行驶，减速停

英国曼彻斯特地区的桦尺蠖有灰色和黑色两种体色，该地区原植物的树干多呈浅灰色，后来该地区建设为工业区，煤烟将树干熏成了黑色．下表为该地区不同时期两种桦尺蠖的数量比．

19世纪中期		20世纪中期
灰色桦尺蠖	黑色桦尺蠖	灰色桦尺蠖	黑色桦尺蠖
95%	5%	5%	95%

（1）在相同环境条件下，桦尺蠖的体色是由______ 控制．

（2）19世纪中期不具有保护色的桦尺蠖是______ 色桦尺蠖．

（3）按照达尔文的进化观点，19世纪中期到20世纪中期，曼彻斯特地区的桦尺蠖的两种体色比例变化是______ 的结果．

物质从______直接变成______叫升华，升华过程中要______热；物质从______直接变成______叫凝华，凝华过程中要______热．

某咨询单位受当地政府委托，研究制定当地《宏观经济政策与社会发展规划》。咨询工程师在宏观经济运行的衡量过程中，拟采用收入法对国内生产总值进行核算。该咨询工程师收集到2011年该地区的所有生产要素收入和间接收入数据如下：工资176亿元，利息5亿元，租金20亿元，利润83亿元，折旧18亿元，间接税96亿元。
咨询工程师根据“十二五”时期我国经济社会发展的主要指标，首先对人口资源环境类指标进行量化，具体包括：森林覆盖率(%)、农村居民人均纯收入(元)、研究与试验发展经费支出占国内生产总值比重(%)、耕地保有量(亿公顷)、主要污染物排放总量减少(%)、城镇化率(%)等指标。
问题

在实际核算中，国内生产总值的计算方法有哪几种根据咨询工程师收集到的数据，计算该地的国内生产总值和国内生产净值。

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

  1  Home can be a great place for children to study. It’s important to provide a workspace of their own where they can read books or just write a letter to their friends.

●  Location （位置）

  2  Kitchen and dining room are not so well suite for regular study. since books and pens get in the way of the day-to-day uses of those areas. Set up a place where a child can settle in and leave papers and pens at band without having to clear everything away each night. For a child that likes being alone, set aside a corner of his bedroom, but keep it separate from things like games, music and other hobbies not related to studying.

●  Keeping Things in Order

Parents should encourage their child to spread out, but to leave it neat and orderly when he isn’t using his workspace. Ownership is very important for self-respect 

  3  The workplace should be personal, but not another part of the playroom.

●   4   Encourage the whole family to help build a supportive environment that children need for success in school. Give them a good example of how to deal with problems, how to manage time and get things done in the right way.  5  Study will be more enjoyable and effective when supported by the whole family

A．Attitude Is Everything.

B．Bring Organization into Your Home.

C．Here are several ways to choose a location.

D．Building a Good Home Learning Environment.E. Hold a can-do attitude and your child will follow your example.

F. Setting up a space in a common area of your home can be a good idea for children.

G. A child who learns to organize his spare will carry organization into every corner of his life.

语法分析方法大体上可分成自顶向下和自底向上两种。自底向上分析法，是从输入符号串开始逐步进行 (1) ，直至 (1) 成文法的起始符号。自顶向下分析法，则是从文法的起始符号开始反复使用产生式进行 (2) ，直至 (3) 出输入符号串。

算符优先文法是一种自底向上分析方法，其特点是文法的产生式中 (4) 。自顶向下的分析方法，通常要求文法的产生式 (4) ，如 (5) 文法就是一种可以自顶向下分析的文法。

2（）

A．递归

B．综合

C．回归

D．推导

E．分解

F．归约