正确答案: B

1949年10月至1956年12月

题目：我国由新民主主义向社会主义转变的时期是指（　　）

解析：B

查看原题

举一反三的答案和解析：

[单选题]根据以下选项，回答 93～94 题：

中度高渗性脱水

[单选题]I don’t think the rain will__________ our plans for a picnic．

affect

解析：affect为及物动词“影响”；effect为名词“结果，影响”；infect为及物动词“传染，使受影响，感染”；defect为名词“缺点”。

[单选题]The main feeling these children have when they are at home by themselves is______.

fear

解析：

43．答案为B  文章第3段第3句Fear is the biggest problem faced by children at home alone可知钥匙儿童的最大问题是恐惧。

[单选题]第 25 题 学生回答选择题时的记忆活动主要是（　　）

再认

[单选题]Passage ThreeMany theories about the origin of the ocean have been proposed by scientists. The most widely accepted one is that the earth at some time in its very early history became hot enough to melt the materials from which it was formed. While in this molten state, lighter rock-forming materials (造岩材料) floated on the surface of the heavier ones. Then, between four and a half four billion (十亿) years ago, the molten earth cooled sufficiently to form. a crust of rock that was many miles thick.

the origin of the ocean

解析：

41．答案为B。根据第一段第一、二句，Many theories about the origin of the ocean have been proposed by scientists．The most widely accepted one is that...作出该项选择。

[单选题]第 20 题 十七大报告建议逐步实行城乡按相同人口比例选举（　　）

人大代表

[单选题]上腹部膨隆的原因中，下列错误的是( )

脾大

[单选题]韩愈《张中丞传后叙》中，与刻画南霁云性格的描写无关的是( )

博闻强记

解析：【答案】A

[单选题]辩证唯物主义认为，理性认识和感性认识的关系是（ ）

感性认识是理性认识的基础，理性认识是感性认识的深化