Question

【题目】阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。
The truth trees are vital to our life is not a secret.They provide us with food, wood and most (importance), oxygen. Now there is one morething we can add to this list—blocking out harmful bacteria from water.
The discovery (make) by a team consisting of scientists from the Massachusetts Institute of Technology (MIT) and high school students whowere seeking a (nature) water filter（过滤器）—one thatwould help communities in developing countries that do not have access tomodern water filter systems.
The (research), led by Professor Rohit Karnik,decided to turn to trees for help because they could allow liquid to flowthrough, while (block) outair bubbles.
They began by cutting 1.5-inch-wide sections of tree bark fromthe branches of a white pine tree. The people related then tested the wood’sfiltering ability by pouring water containing red dye particles of differentsizes through. their amazement, they found that it waseffective in trapping all the articles.
(encourage), the team conducted experiment, this time with water contained bacteria. Sure enough, the sapwoodheld back 99% of the bacteria, allowing only 1% to flow through.

Answer 1

【答案】["That","importantly","was made","natural","researchers","blocking","To","encouraged","another","that\which"]
【解析】通过本文考查学生正确运用英语单词的能力。
①that 句意:树木对我们的生活很重要的事实并不是秘密。that 引导同位语从句，从句不缺少成分，故用从属连词that对the truth的内容进行解释。
②importantly 句意：树木提供给我们食物，木头，最重要的是，提供给我们氧气。。mostimportantly最重要的是，做状语谓语动词provide。
③was made 本题考查被动语态，make adiscovery 发现；discovery做主语，故用被动语态was made。
④natural 句意:他们正在寻找一种自然的滤水器。形容词natural用来修饰water filter。
⑤researchers句意: ProfessorRohit Karnik带领的团队决定求助于树木。考查名词，这里应该用复数，故researchers。
⑥blocking 句意:当遮住空气气泡时，它们允许液体流经。考查现在分词作状语，故blocking。
⑦To 本题考查固定结构to theiramazement令他们惊讶的是。
⑧Encouraged 考查过去分词作状语 the team与动词encourage之间是被动关系，故用encouraged做状语。
⑨another 句意:他们又做了一次试验。another又一，再一。
⑩that\which 本题考察定语从句 选择合适关系代词指代先行词water并在定语从句中充当主语，故用that\which。