2019年全国I卷语法填空题
第二节 （共10小题；每小题1.5分，满分15分）
阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
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 62 (poor) studied; however, biologists calculate that there are about 20,000-25,000 polar bears worldwide.
Modern methods 63 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 Nunavut 65 (report) increases in bear sightings around human settlements, leading to a 66 (believe) that populations are increasing. Scientists have responded by 67 (note) that hungry bears may be congregating (聚集) around human settlements, leading to the illusion (错觉) that populations are 68 (high) 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.
答案：
61. that 62. poorly 63. of/for 64. to perform 65. have reported
66. belief 67. noting 68. higher 69. the 70. are