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Unit 4 History and Traditions
1．Scientists have solved a puzzle(解决难题) about modern humans，after research showed that
a famous skull of a human ancestor found in South Africa is a million years older than experts
thought.
2．To get a more accurate age for Mrs Ples，a team led by Professor Darryl Granger of Purdue
University in Indiana，US，used a new method to date(熟词生义：vt.测定年代) the sandy rocks
where the skull lay.
3．A new study analyzing stone tools from southern China provides the earliest evidence of rice
harvesting，dating to(追溯到) as early as 10,000 years ago.
4．The researchers examined 52 flaked stone tools from the Shangshan and Hehuashan sites，the
latter of which was occupied(v.占领，占据) by Shangshan and Kuahuqiao cultures.
①occupy v．占据(空间，时间)；使忙于(做某事)；占领 occupy oneself 使忙碌，忙于……
②occupied adj.已占用的；无空间的
be occupied with sth/be occupied (in) doing sth 忙于做某事
③occupation n．工作，职业；占领
With their chins on their hands，the students occupy themselves by staring out of the window.
I have been so occupied with my homework that I can’t spare any time to go with you.
5．“What’s interesting about rice phytoliths is that rice husk and leaves produce different kinds
of phytolith，which enabled us to determine(enable sb to do 使某人能够) how the rice was
harvested，” says Wang.
6．It was comprised of(由……组成) solitary blossoms of many varieties that shouldn’t really
go together yet somehow did.
7．The more I understood what the flowers were saying，the more I started to remember the
woman who might have earned them before I separated myself from everyone and everything.
(“the ＋比较级……，the ＋比较级……”结构)
8．It is a distinct visual contrast that shouldn’t work(熟词生义：vi.奏效；产生预期的结果)，
but/yet somehow these two very different worlds make a good combination.
