5. 那就是他被提拔的原因。

       he is promoted to a higher position. (why弓導(dǎo)表語從句)

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閱讀理解

  A Researchers have discovered stone tools in Norfolk,UK, which suggest that early humans arrived in Britain nearly a million years ago―or even earlier. The find pushes back the arrival of the first hu?mans in what is now the UK by several hundred thousand years.

  Environmental data suggests that temperatures were relatively cool. This raises the possibility that these early Britons may have been among the first humans to use fire to keep warm. They may also have been some of the earliest humans to wear fur clothing. With the ancient tools were plant material,including a pine cone that pro?vided clues about climate.

  The discoveries were made in Happisburgh,in the north of Norfolk. At the time there was a land bridge connecting what is now southern Britain with continen?tal Europe.

  There are no early human remains,but the researchers speculate (推測) that the most likely species was Homo antecessor,more commonly―and possibly appro?priately―known as "Pioneer Man".

  Remains of the species have been found in the Atapuerca region of northern Spain,and date back to0. 8〜1,2 million years ago. So the species could well have been in Britain at around that time,according to Professor Chris Stringer of the Natural History Museum in London. "If the climate was good and the land bridge was there,there's no real reason why they couldn't have come (to Britain) as far back as1. 2 million years ago," he told BBC News.

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