请认真阅读下面的短文,从短文后所给的六个选项中选出五个可以填入空白处的最佳选项。
Koalas are lovely. Most of them live in Australia. Koalas have short front legs and long strong back legs. Their fur is brown and thick. (1) A baby koala is very small when it is born. It is not bigger than your little toe. (2) It lives in its mother's pouch(育儿袋) for 5 to 7 months. When the baby koala leaves its mother's pouch, it has lots of fur. And it is as big as your shoe. (3) Koalas sleep during the day and eat at night. They have leaves as their food.
(4) During the 1920s, however, people kept killing them for their fur and lots of koalas died. Later, laws were made to stop people from killing koalas and make the number of koalas increase.
Today, there are fewer than 100,000 koalas in the country and they are still in danger of dying out. Life is still not easy for them. (5)
A. Once there were millions of koalas in Australia.
B. It keeps them warm during the cold weather.
C. It has no fur and can't see anything either.
D. Koalas live in trees and have big noses to smell.
E. As adults, koalas grow to be about 60 cm tall and weigh from 9 kg to 13 kg.
F. They have fewer and fewer places to live and many of them die from diseases.

1. B 2. C 3. E 4. A 5. F

【分析】首先通读全文，明确文章围绕考拉的特征、成长过程、生活习性及数量变化展开。接着逐个分析每个空白处的上下文逻辑：第1空前提到考拉的毛“棕色且厚”，需补充毛的作用，匹配选项B；第2空前提到考拉宝宝“出生时很小”，后文说其在育儿袋的情况，需补充宝宝出生时的状态，匹配选项C；第3空前提到宝宝离开育儿袋时的大小，后文讲睡眠进食，需补充成年考拉的情况，匹配选项E；第4空后文讲1920年代考拉数量减少的原因，需补充过去数量多的情况，匹配选项A；第5空前文说考拉仍有危险，需补充现状的原因，匹配选项F。
【解析】1. 第1空：前文描述考拉的毛“棕色且厚”，选项B“它在寒冷天气里给它们保暖”承接毛的功能，符合语境，故选B；2. 第2空：前文提到考拉宝宝“出生时很小，比小脚趾还小”，后文说明其在育儿袋的时间，选项C“它没有毛，也看不见任何东西”描述宝宝出生时的状态，衔接自然，故选C；3. 第3空：前文讲宝宝离开育儿袋时的大小，后文介绍考拉的睡眠和进食习性，选项E“成年考拉长到约60厘米高，体重9到13公斤”说明成年考拉的情况，符合逻辑，故选E；4. 第4空：后文提到1920年代人们为皮毛猎杀考拉导致数量减少，选项A“澳大利亚曾经有数百万只考拉”与后文形成数量对比，故选A；5. 第5空：前文说考拉仍面临危险，生活不易，选项F“它们的栖息地越来越少，很多死于疾病”解释现状的原因，故选F。
【答案】1.B 2.C 3.E 4.A 5.F
【知识点】英语阅读理解（七选五）、语篇逻辑推理
【点评】本题为英语七选五题型，要求结合上下文语境和逻辑关系选择合适的句子，考查学生的阅读理解与语篇分析能力，需准确把握前后文的衔接关系。
【难度系数】0.5