题目内容
语法填空
阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填人一个适当的词或使用括号中词语的正确形式填空。
When very small dinosaur bones were found in a Germany mine people thought they were from baby dinosaurs. 1 scientist Martin Sander's work shows that they were probably fully 2 (grow)and belong to the smallest giant dinosaur species ever found.
Growth marks on dinosaur bones are similar 3 growth rings on trees.The rings are far apart while the animal is young and growing quickly. 4 get closer as growth slows.“It is 5 (exact)these tight ring marks that we found in the fossil bones,” says Sander.So the fossils must have been from adult animals.
6 was this German dinosaur so much smaller than other giant dinosaurs, which grew up to 45 meters long and weighed as much as a thousand humans?
150 million years ago, most of Germany was underwater.Scientists think that 7 water levels rose, there was less and less land and food available.The dinosaur 8 (force)to adapt and evolved into a smaller animal 9 (need)less space and food.
Since 1998, scientists have dug up more than 1,000 dinosaur fossils in the mine.It is one of the few places in the world 10 the bones and footprints of dinosaurs have been found together.
解析:
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1.But/However 2.grown 3.to 4.They 5.exactly 6.Why 7.as/when 8.was forced 9.needing 10.where |