题目内容
【题目】The truth【1】trees are vital to our life is not a secret. They provide us with food, wood and most【2】(important), oxygen. Now there is one more thing we can add to this list—blocking out harmful bacteria from water.
The discovery【3】(make) by a team【4】(consist) of scientists from the Massachusetts Institute of Technology (MIT) and high school students【5】were seeking a natural water filter—one that would help communities in developing countries that do not have【6】(accessible) to modern water filter systems.
The【7】(research), led by Professor Rohit Karnik, decided to turn to trees for help because they could allow liquid to flow through, while blocking out air bubbles.
They began by cutting 1.5-inch-wide sections of tree bark from the branches of a white pine tree. The people related then tested the wood’s filtering ability by pouring water containing red dye particles of different sizes through.【8】their amazement, they found that it was effective in trapping all the articles.【9】(encourage), the team conducted【10】experiment, this time with water that contained bacteria. Sure enough, the sapwood held back 99% of the bacteria, allowing only 1% to flow through.
【答案】
【1】that
【2】importantly
【3】was made
【4】consisting
【5】who
【6】access
【7】researchers
【8】To
【9】Encouraged
【10】another
【解析】试题分析：树对我们的生活很重要，这已经不是秘密。一队科学家对树进行了研究，又有了新的发现。
【1】that 考查同位语从句。树对我们很重要，这个事实不是秘密。故填that。
【2】importantly 副词修饰整个句子，最重要的是，他们提供给我们食物、木材和氧气。故填importantly。
【3】was made The discovery和make之间是被动关系，又是过去的事情，故填was made。
【4】consisting 句意：由科学家组成的一队人，consist of由---组成，无被动，现在分词作定语，故填consisting。
【5】who high school students做先行词，指人，后面是定语从句，缺少引导词，从句缺少主语，故填who。
【6】access 固定搭配have access to ---进入的方法，故填access。
【7】researchers 此处研究者指前面提到的一队科学家，用复数形式，故填researchers。
【8】To 固定搭配to one’s amazement使某人吃惊的是，开头大写，故填To。
【9】Encouraged the team和encourage之间是被动关系，“被受到鼓励”，故填Encouraged。
【10】another 句意：这队人受到鼓励，他们又指导另一个实验。故填another。
