2026年励耘书业浙江新期末八年级英语下册外研版第17页答案
一、完形填空
阅读下面的短文,从各题所给的四个选项中选出一个最佳答案。
The Solomon Islands is a country in the Pacific Ocean. In October 2024, a group of scientists went there on a research trip. Guess what they found? The
B
1
coral colony in the world!
Coral reefs may
A
2
rocks, but they are made up of tiny animals called "polyps(珊瑚虫)". Many polyps of the same kind form a colony.
C
3
, a coral reef is built out of many different colonies. This newly found coral reef,
C
4
, is just one colony. It is made up of around a billion polyps of the
C
5
kind. This huge colony is about 34 metres
A
6
, 32 metres long and 5.5 metres high.
D
7
, it covers about the same area as five tennis courts(网球场). It is also very old—between 300 and 500
D
8
!
Coral reefs play a big role in the ocean. They are
B
9
to many sea animals, such as shrimp, crabs(螃蟹) and fish. Healthy coral reefs also
D
10
shorelines from flooding during storms.
Sadly, over the years, climate change has warmed up the world's
A
11
. This has caused many coral reefs to
A
12
and turn white. But this huge coral colony is very healthy. It may be able to live in
C
13
waters, scientists say. That is good news,
A
14
this colony may help produce new coral colonies that can live in warmer waters. The huge coral colony is also important for the Solomon Islands. The country has protected its
B
15
in the past. It will protect the area even more in the future.
(
B
)1. A. smallest B. largest C. longest D. widest
(
A
)2. A. look like B. look for C. look into D. look up
(
C
)3. A. Sometimes B. Always C. Usually D. Seldom
(
C
)4. A. but B. otherwise C. however D. moreover
(
C
)5. A. colourful B. different C. same D. left
(
A
)6. A. wide B. deep C. long D. high
(
D
)7. A. After all B. Above all C. Beyond all D. In all
(
D
)8. A. days B. weeks C. months D. years
(
B
)9. A. house B. home C. family D. area
(
D
)10. A. prevent B. provide C. produce D. protect
(
A
)11. A. oceans B. lands C. lakes D. mountains
(
A
)12. A. die B. live C. produce D. increase
(
C
)13. A. colder B. cleaner C. warmer D. dirtier
(
A
)14. A. as B. so C. although D. if
(
B
)15. A. animals B. waters C. islands D. lands

答案

1—5. BACCC 6—10. ADDBD 11—15. AACAB
难题解析
【完形填空】
本文是一篇说明文,介绍2024年10月科学家在太平洋所罗门群岛发现的全球最大珊瑚群落:该群落仅由单一珊瑚虫种群构成,面积大、历史悠久且状态健康;文章还说明珊瑚礁对海洋生态的重要作用,以及气候变化对珊瑚礁的威胁,而这个健康的珊瑚群落或能帮助培育适应温暖水域的珊瑚。
第1题:考查点:形容词辨析及语境理解
原文依据:"Guess what they found? The ______ coral colony in the world!"
选项分析:后文提到该珊瑚群落“覆盖约5个网球场”,说明是“最大的”。A. smallest(最小的)、C. longest(最长的)、D. widest(最宽的)均不符合“规模最大”的描述,B. largest(最大的)契合语境。
结论:选B。
第4题:考查点:连词辨析及逻辑关系
原文依据:"______, a coral reef is built out of many different colonies. This newly found coral reef, ______, is just one colony."
选项分析:前文说珊瑚礁通常由多个群落构成,后文说新发现的珊瑚礁“仅由一个群落构成”,存在转折关系。A. but(但,需连接句子)、B. otherwise(否则)、D. moreover(此外)均不符合转折逻辑,C. however(然而,表转折)契合语境。
结论:选C。
第9题:考查点:名词辨析及固定搭配
原文依据:"They are ______ to many sea animals, such as shrimp, crabs and fish."
选项分析:珊瑚礁是海洋动物的“栖息地”,“be home to”是固定搭配,意为“是……的家园”。A. house(房屋,不与“to”搭配)、C. family(家庭)、D. area(区域)均不符合固定搭配及语境,B. home(家园)契合要求。
结论:选B。
第12题:考查点:动词辨析及语境推理
原文依据:"climate change has warmed up the world's ______. This has caused many coral reefs to ______ and turn white."
选项分析:气候变化导致海水升温,珊瑚礁会“死亡/退化”并白化。B. live(生存)、C. produce(生产)、D. increase(增加)均不符合“珊瑚礁受环境影响的变化”,A. die(死亡)契合“升温导致珊瑚礁白化、衰败”的逻辑。
结论:选A。

解析

【分析】
做完形填空需先通读全文把握主旨,再结合语境、词汇辨析、逻辑关系、固定搭配逐一解题。第1题根据后文对珊瑚群落规模的描述选“最大的”;第2题考查短语辨析,结合珊瑚礁外观选合适短语;第3题根据珊瑚礁的常规构成选副词;第4题考查转折连词,结合前后文逻辑选however;第5题根据“one colony”判断是同一种珊瑚虫;第6题描述尺寸,结合并列的长、高选宽;第7题考查短语,表总面积;第8题根据“old”判断是年数;第9题考查固定搭配be home to;第10题考查protect...from...结构;第11题气候变化影响海洋;第12题升温导致珊瑚死亡白化;第13题对应前文的暖水;第14题表原因选as;第15题对应水域保护。
【解析】
1. 考查形容词辨析及语境理解:后文提到该珊瑚群落覆盖约5个网球场,说明是世界上最大的,故选B。
2. 考查动词短语辨析:珊瑚礁看起来像岩石,look like意为“看起来像”,符合语境,故选A。
3. 考查副词辨析:通常珊瑚礁由不同的群落构成,usually意为“通常”,契合语境,故选C。
4. 考查连词辨析:前文说珊瑚礁一般由多个群落构成,后文说新发现的仅为一个群落,表转折,however用于句中表转折,故选C。
5. 考查形容词辨析:根据“one colony”可知由同一种珊瑚虫构成,same意为“相同的”,故选C。
6. 考查形容词辨析:描述尺寸,并列的是长、高,此处指宽,wide意为“宽的”,故选A。
7. 考查短语辨析:此处表总面积,in all意为“总共”,符合语境,故选D。
8. 考查名词辨析:根据“old”可知是300到500年,years意为“年”,故选D。
9. 考查名词辨析及固定搭配:be home to是固定搭配,意为“是……的家园”,指珊瑚礁是海洋动物的栖息地,故选B。
10. 考查动词辨析:protect...from...意为“保护……免受……”,指珊瑚礁保护海岸线免受洪水,故选D。
11. 考查名词辨析:气候变化使世界海洋变暖,oceans意为“海洋”,故选A。
12. 考查动词辨析:升温导致珊瑚礁死亡并白化,die意为“死亡”,符合语境,故选A。
13. 考查形容词辨析:对应前文的暖水,warmer意为“更暖的”,故选C。
14. 考查连词辨析:此处表原因,as意为“因为”,故选A。
15. 考查名词辨析:该国保护其水域,waters意为“水域”,故选B。
【答案】
1—5. BACCC 6—10. ADDBD 11—15. AACAB
【知识点】
完形填空;词汇辨析;固定搭配
【点评】
本文为说明文,围绕新发现的珊瑚群落展开,考查学生对词汇、语境及逻辑关系的理解,是中等难度的完形填空,需学生掌握常见短语搭配和上下文逻辑衔接。
【难度系数】
0.6