答案:is regarded
7.解析:考查冠词。此处指秋天的黄金时期,是特指,故用定冠词the。
答案:the
8.解析:考查副词。所填词修饰整个句子,故要用副词形式。traditionally“传统地”。
答案:traditionally
9.解析:考查时态。根据句中的时间状语“in ancient times”可知此处要用一般过去时。
答案:believed
10.解析:考查名词复数。spirit在这里表示“幽灵,鬼魂”,是可数名词,故用复数形式。
答案:spirits
C
There is good and bad news about the number of trees on our planet. The good news is __1__ there are seven times more trees than we __2__ (think). A few years ago, scientists estimated the world had 400 billion trees, but a new study makes a __3__ (calculate) that there are around three trillion trees. That's a three __4__ (follow) by 12 zeroes. But Dr Thomas Crowther told the BBC
that this new number is unable __5__ (change) anything.
What is the bad news? Thousands of years ago, the earth had around six trillion trees. Human activity has cut the number of trees on the planet __6__ half. A good example of this is __7__ fact that Europe used to be one of the giant forests. Dr Crowther said people are __8__ (responsibility) for the loss of three trillion trees. Another 15 billion trees are lost each year because of deforestation (毁林) and farmland. The scientists said this figure is “__9__ (extreme) higher” than a century ago. Dr Crowther added, “This study highlights how much more effort __10__ (need) if we are to restore healthy forests worldwide.”
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