2019全国一卷「2019全国一卷英语完形填空」

北极熊

（2019全国I）

The polar bear is found in the Arctic Circle and some big land masses as far south as Newfoundland. While they are rare north of 88°, there is evidence ___61___ they range all the way across the Arctic, and as far south as James Bay in Canada. It is difficult to figure out a global population of polar bears as much of the range has been poorly studied; however, biologists calculate that there are about 20,000-25,000 polar bears worldwide.

Modem methods of/for tracking polar bear populations have been employed only since the mid-1980s, and are expensive ___64___ (perform) consistently over a large area. In recent years some Inuit people in Nunayut ___65___ (report) increases in bear sightings around human settlements, leading to a belief) that populations are increasing. Scientists have responded by noting that hungry bears may be congregating(聚集) around human settlements, leading to the illusion(错觉) that populations are ___68___ higher than they actually are. Of ___69___ nineteen recognized polar bear subpopulations, three are declining, six ___70___ (be) stable, one is increasing, and nine lack enough data.

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详解及拓展笔记：

1.that引导的同位语从句用在某些抽象名词（如：news, fact, problem, evidence, idea, thought, hope, desire, suggestion, possibility等）之后，对前面的名词起补充说明的作用，that只起连接作用，在从句中不充当成分，一般不省略。

There’s a feeling in me that we’ll meet again.

2.（2016江苏完形填空）

He was offering a ______ for us to change our lives and achieve our dreams.

A.tool B. method+for/of C. way D. rule

3.(2020全国II)They are easy to care for and make great presents.

不定式放在表示性质或特征的形容词后做状语，用主动式

easy, hard, difficult, important, impossible, interesting, pleasant, nice, comfortable, safe, dangerous...+to do

This question is easy _____(answer).

I hope that my dad is as easy _____(please) as my mom, who is always delighted with perfume.

He is hard _____(get) along with.

3.现在完成时表示已完成：already, yet, just, now;

现在完成时表示延续：since, for, recently, lately, up to now, so far, in/during/over the last/past 5 years, how long;

现在完成时表示经历：before, ever, never, once, twice, three times;