Question

【題目】閱讀下面材料，在空白處填入適當?shù)膬热荩?個單詞）或括號內單詞的正確形式。

It is not a secret 【1】 trees are vital to our life. 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(過濾)—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【8】______ 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. To their 【9】 (amaze), they found that it was effective in trapping all the particles. Greatly 【10】 (encourage), the team conducted another experiment, this time with water that contained bacteria. Sure enough, the sapwood held back 99% of the bacteria, allowing only 1% to flow through.

Answer 1

【答案】

【1】that

【2】importantly

【3】was made

【4】consisting

【5】who/that

【6】access

【7】researchers

【8】to

【9】amazement

【10】encouraged

【解析】

試題分析：樹木作用巨大。最新研究表明，它們能去除水中的細菌。

【1】that 考查主語從句。此處it是形式主語，后面是主語從句，又因為從句中不缺少成分，故選用從屬連詞that。

【2】importantly 考查形容詞和副詞的轉換。此處most importantly是在修飾謂語動詞provide，故用副詞。句意：它們?yōu)槲覀兲峁┝耸澄锖湍绢^，更重要的是提供了氧氣。

【3】was made 考查謂語動詞的時態(tài)和語態(tài)。the discovery和make之間是被動關系，故用被動語態(tài)。動作發(fā)生在過去，故用一般過去時。

【4】consisting 考查非謂語動詞。此處是現(xiàn)在分詞短語“consisting of scientists”作后置定語，修飾team。因為被修飾詞team和consist之間是主動關系，故用現(xiàn)在分詞。

【5】who/that 考查定語從句。分析句子可知，此處為定語從句，因為先行詞是students，并且引導詞在定語從句中充當主語，故用who/that。

【6】access 考查形容詞和名詞的轉換。have access to意為“使用，接近，可以利用”，是固定搭配。

【7】researchers 考查動詞和名詞的轉換。句意：研究人員，在Professor Rohit Karnik的領導下，決定向樹木求助。根據(jù)句意，此處表示人，故寫成researchers。

【8】to 考查介詞。turn to“向……求助”，為固定搭配。

【9】amazement 考查名詞。to one's amazement是固定結構，表示“令某人驚訝的是”。

【10】encouraged 考查非謂語動詞。此處為分詞作狀語，主語team與encourage之間是動賓關系，故選用過去分詞“encouraged”。