The whole nation is ________ to the medical workers fighting the new disease—COVID—19.
A.careful B.thankful C.honest D.brave
President Xi Jinping _______ the State Preeminent Science and Technology Award to Huang Xuhua and Zeng Qingcun.
A.examined B.introduced C.presented D.lifted
More than 95 percent of China's poor ______ had shaken off poverty by the end of 2019.
A.population B.relatives C.villagers D.pollution
—Madam, how about this purple dress?
—Thanks, but I think I would like a black ____________.
A.it B.one C.that D.this
简要描绘漫画内容，并结合现实生活，就漫画的主题谈谈自己的感想，题目自拟。字数80-100。
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White-furred animals are in danger of dying out. Climate (天气) change is causing a fall in snow cover, leaving them exposed (暴露的), a new study suggests.
Scientists in Poland have been following the worrying case of the white-coated weasel (白鼬), which sheds (褪去) its brown covering in the winter for a milky coat in order to blend easily into its icy environment.
But researchers have discovered that between 1997 and 2007 the number of days with snow cover was from 80 to 40 in Bialowieza Forest, Poland. It means that the little animals are caught out in a completely unsuitable environment, where they can be caught by foxes and crows. Scientists found that on days when there was little winter snow cover. The number of white-coated weasels they managed to catch fell to as low as 20 percent of the total. It meant that the rest had been killed.
The problem is likely to affect other white-furred animals such as the Arctic fox when the snow cover increasingly gives way to a landscape (风景) of greens and browns.
In the near future white weasels may disappear completely from many areas of Northern Europe and America. They will either be replaced by brown ones or they will evolve (进化).
Researchers also carried out tests using toys of brown and white-coated weasels to see if the colors were actually making a difference to predators (捕食者). They found lots of animals had come near to the white toys, but none had shown interest in the brown toys.
The researchers are hopeful the animals will learn to adapt (适应), but say they cannot rule out the animals disappearing completely.
1.写出划线单词them指代的内容。
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2.回答问题：Why does the weasel change its brown covering into white when winter comes?
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3.根据短文内容填空，第(1)题不超过3个词，第(2)题限填1词。
(1) White-furred animals are in danger of dying out because of _______________.
(2) In Bialowieza Forest, the number of days with snow cover reduced (减少) by ______ percent between 1997 and 2007.
4.选出划线短语rule out的意思。
A.give up B.imagine C.control
5.给短文拟一个恰当的题目，不超过8个词。
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