Scientific b_____ improve the quality of human life on earth.

StepⅢ Para1文句解析.（B级）

1. If you had to choose the single most important discovery of the 20th century,you would have a real dilemma on your hands.

译文：

[短语解析]

on your hands意为：由某人处理；由某人负责

我来译：

　　　　我手中有一所空房子要处理。

2. Medical advances ranged from discovering the causes of diseases under microscopes to surgical procedures replacing diseased organs with donated ones.

译文：

[句子解析]

本句主要结构形式为ranged from ...to...表明变化的区间或者范围；to的前后为对等的名词。

[词语解析]

range n. 一系列 v. 在...和...之间变动

我来译：

价格在五元到一百元之间变动。

[词语拓展]

a range of sth.

3. We started flying around the world and meanwhile,scientists figured out how to split the atom,previously thought to be the smallest particle of matter in the universe.

译文：

[句子分析] （D级）

本句有meanwhile连接两个分句，它们有着各自的主谓结构；在第二个分句中，how to split the atom作figured out的 语；previously thought to be the smallest particle of matter in the universe是 分词短语作the atom的 ( A.宾语补足语B.后置定语C. 定语从句).

[词语解析]

split v. ( 使某物 )裂开，分开

split up： 分离