题目内容
【题目】Directions: After reading the passage below, fill in the blanks to make the passages coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.
A newly discovered tea plant is caffeine-free
The world loves tea and some 3m tons of tea are consumed every year. Tea can be good for health, as it contains compounds that help to lower cholesterol(胆固醇)and reduce the risk of heart disease. But there is a downside. Tea contains caffeine which, 【1】 it improves mental alertness, can also cause anxiety, insomnia and other problems.
【2】 would be agreeable is that a tea plant that provides all the taste and goodness but with little or 【3】 of the caffeine has been found. Liang Chen and Ji-Qiang Jin of the Tea Research Institute of the Chinese Academy of Agricultural Sciences have discovered just such a plant 【4】(grow) wild in a remote area in Fujian province, southern China. 【5】 they report in the Journal of Agricultural and Food Chemistry, not only is the tea plant naturally caffeine-free but it also contains a number of unique medicinal compounds that, the locals believe, offer considerable health benefits.
【6】(know) locally as Hongyacha, the newly discovered plant grows only between 700 and 1,000 metres 【7】 sea level around a handful of Chinese villages.
Now the researchers 【8】(explore) methods to protect Hongyacha in its natural habitat while further studies are carried out. It can take time – and sometimes it does not work – for new plant varieties 【9】(breed) for commercial use. A pair of naturally caffeine-free coffee plants were discovered in 2003, but little progress 【10】(report) Tea enthusiasts will be watching Hongyacha with interest. And others will wonder what else is out there.
【答案】
【1】although
【2】What
【3】none
【4】growing
【5】As
【6】Known
【7】above
【8】are exploring
【9】to be bred
【10】has been reported
【解析】
这是一篇说明文。文章讲述了茶因为含有有助于降低胆固醇和降低心脏病风险的化合物,对健康有益,但茶中含有咖啡因,虽然它能提高精神警觉性,但也会导致焦虑、失眠和其他问题。而一种提供了所有的味道和好处,但很少或没有咖啡因的洪崖茶被发现了。目前,研究人员正在探索保护洪崖茶自然栖息地的方法,同时进行进一步的研究。
【1】考查连词。句意:茶中含有咖啡因,虽然它能提高精神警觉性,但也会导致焦虑、失眠和其他问题。本句为让步状语从句,表示“虽然”,故填although。
【2】考查连词。句意:令人高兴的是,一种提供了所有的味道和好处,但很少或没有咖啡因的茶树被发现。本句为主语从句,从句中缺少主语,且表示事情,故填What。
【3】考查代词。表示“没有任何”短语为none of。故填none。
【4】考查非谓语动词。句意:中国农业科学院茶叶研究所的陈亮和金继强在中国南部福建省的一个偏远地区发现了这种野生茶树。本句中grow做非谓语动词,与plant之间是主动关系,故填growing作后置定语,故填growing。
【5】考查连词。句意:正如他们在《农业与食品化学杂志》上发表的报告称,茶树不仅不含咖啡因,而且还含有许多独特的药用化合物,当地人认为这些化合物对健康有相当大的好处。本句为方式状语从句,表示“正如,正像”,故填As。
【6】考查非谓语动词。句意:这种新发现的植物在当地被称为洪崖茶,海拔只有700至1000米,生长在中国少数几个村庄附近。固定短语be known as“被称为;作为……被熟知”,这里是过去分词作状语,故填Known。
【7】考查介词。表示“在……上面”,海平线1000米以上,故填above。
【8】考查动词时态语态。句意:目前,研究人员正在探索保护洪崖茶自然栖息地的方法,同时进行进一步的研究。根据now可知,使用现在进行时,主语是为researchers复数名词,故填are exploring。
【9】考查非谓语动词。句意:培育新的植物品种用于商业用途可能需要时间,有时甚至是行不通的。本句中breed作非谓语动词,且表将来应用不定式,且与new plant varieties构成被动关系,故用to be done形式。故填to be bred。
【10】考查动词时态语态。句意:2003年,人们发现了两种天然的不含咖啡因的咖啡树,但至今鲜有报道。本句主语与谓语动词构成被动关系,且表示“自2003年到今天”为动作的持续应用现在完成时,主语为little progress,故填has been reported。
名词性从句关键在于三点:一、找准从句在主句中充当的成分即分出是名词性从句的主语句、宾语从句、表语从句还是同位语从句。二、连接词从句中充当的成分(主、宾、定或状语或不做任何成分)三、弄清楚每个连接词的意义。此外还要注意,近年来高考对于名词性从句的考查多从名词性从句的语序和连接词的用法区别上考查。如第二小题,句意:令人高兴的是,一种提供了所有的味道和好处,但很少或没有咖啡因的茶树被发现。本句为主语从句,从句中缺少主语,且表示事情,故填What。