下面各组词语中没有错别字的一项是[ ] A．模棱两可　感恩戴德　百思不解 B．宇

从具体形象思维向抽象逻辑思维过渡的转折期在（）。

A.5～6岁

B.6～8岁

C.9～10岁

D.11～12岁

某市新化建筑公司为该市益壮饮料厂承建厂房，约定工程造价900万元，工程竣工验收合格后，益壮饮料厂向新化建筑公司支付800万元，剩余100万元未付。新化建筑公司为此诉至法院，一审判决饮料厂败诉，饮料厂不服，提起上诉。二审期间，饮料厂提起反诉，称新化建筑公司在施工过程中曾向饮料厂借用了80万块砖用于其他工程，要求新化建筑公司返还80万块砖钱。二审法院应如何处理该反诉 ( )

A．二审法院应对反诉作出判决

B．二审法院应根据当事人自愿原则，就新增加的请求进行调解；调解不成的，告知当事人另行起诉

C．二审法院应撤销原判决，发回重审

D．二审法院应驳回反诉

微波波段用的（）必须具有低频谐振电路的基本性能，此外波道系统的谐振腔必须封闭，以免辐射。

The world has never been more closely and intricately connected. Our behavior (51) the environment we all share, and we are tied into a global economy and global communication system. (52) choosing to buy one garment rather than another we help determine whether someone on the other side of the world retains or (53) their job; emissions from one part of the world contribute to a hole in the ozone layer somewhere else; we can (54) with others anywhere via satellites, the Internet and the mobile phone. This interdependency, (55) "connexity", is the defining characteristic of the world today.

However, despite connexity, human beings have also (56) been, more separate. Belief in individual rights and freedoms is at the heart of the West’s world view. People nowadays insist their freedom to (57) how to live, who to love, what to consume and what to believe. In economics, the sovereignty of the consumer and the shareholder is paramount. In politics, the sovereignty of nations remains a (58) concern.

In this inspiring and important book Mulgan argues that our freedom and our connectedness are set or collision course and argues that the (59) way out of our current impasse (僵局) is to go beyond our sense of ourselves as (60) unit, and recognize the webs of mutual responsibility in which we live.

57().

A.select 

B.adopt 

C.choose 

D.adjust

日本从1942年开始推行养老保障制度，1961年建立了基础养老金（也称国民年金）制度，规定（）以上国民都有义务加入基础养老金，日本从此实现“全民皆有养老金”。

A.18岁

B.19岁

C.20岁

D.21岁