单元小测(Unit 6) Ⅰ.1.disturbed 2.passionate 3.(should) be given 4. gently 5. to be recognized/recognizing 6.thoroughly 7.charming 8.puzzled 9.on 10.against Ⅱ.1.be/become aware of 2.at the risk of 3.are regarded/viewed as 4.speaks of 5.will stand by 6.or so 7.Dozens/Scores of 8.insisted on Ⅲ.1.as if/though we were friends 2.When praised 3.encouraging us to get pleasure 4.is not his grades but that 5.do want to improve my English Ⅳ.【文章大意】 这是一篇说明文。文章通过介绍水獭数量的恢复历程及其对沿海沼泽生态系统的积极影响,强调了顶级捕食者在维持生态平衡中的重要作用。 1.D 细节理解题。根据第二段中“Elkhorn Slough, a coastal marsh within Monterey Bay, had been experiencing severe damage.The root cause was a growing population of shore crabs, which fed heavily on the marsh plants, weakening the structural integrity of the habitat.”(埃尔克霍恩沼泽是蒙特利湾的一个沿海沼泽,已经遭受了严重的破坏。根本原因是食草蟹的数量不断增加,它们主要以沼泽植物为食,削弱了栖息地的结构完整性。)可知,水獭的消失导致了沿海生态平衡的恶化。故选D项。 2.D 词义猜测题。画线词前文“By naturally feasting on crabs, the otters have helped a significant regrowth of plant life.”说明水獭通过以螃蟹为食,可以帮助植物的再生,从而推知画线词应为“恢复,复苏”的意思,与D项同义。故选D项。 3.C 推理判断题。根据最后一段中“Suddenly, sea otters go from just cute things we like to something that can protect our livelihoods and our properties.”可知,作者引用Lekelia Jenkins的话是为了展示水獭对人类的实际益处。故选C项。 4.B 推理判断题。根据最后一段中“As the sea otter population continues to restore, their positive impact on coastal ecosystems is likely to increase. It not only showcases the sea otter as a central species—a species that has a significant effect on its natural environment—but also highlights the essential nature of top predators (捕食者) in preserving ecological harmony.”(随着水獭数量的持续恢复,它们对沿海生态系统的积极影响可能会增加。它不仅展示了水獭作为一个关键物种———一个对自然环境有重大影响的物种———而且突出了顶级捕食者在维护生态和谐方面的本质。)可知,文章通过展示水獭对沿海生态系统的积极影响,传达了生态系统之间相互联系的信息。故选B项。 Ⅴ.【文章大意】 本文是一篇说明文。文章介绍了海洋潮起潮落的现象。 1.E 根据上文“The sun and moon pull on the ocean, making the water level rise and fall.”和下文“Ocean tides usually rise and fall twice a day.”可知,这里为承上启下句,引出本文介绍的对象———潮汐。E选项(水的上升和下降被称为海洋的潮汐。)符合文意,故选E。 2.G 根据前文“Soon, the water covers the intertidal zone(潮间带).”可知,这里介绍的内容与潮间带有关。G选项(潮间带是介于高潮和低潮之间的区域。)符合文意,故选G。 3.B 根据前文“After the tide rises for about six hours, it begins to fall.”可知,这里开始介绍退潮。B选项(然后我们说潮水要退了。)符合文意,故选B。 4.D 根据后文“It forms pools between rocks on shore.”可猜测,空处描述的是水坑形成的原因。D选项(然而当潮水退去时,一些水留了下来。)符合文意,故选D。 5.C 根据前文“You might also see animals eating the seaweed and the al ... ...
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