
【名词&注释】
科学家(scientist)、太平洋(pacific)、真核细胞(eukaryotic cells)、细胞核(cell nuclear)、世纪末(century end)、化学能(chemical energy)
[单选题]裸藻细胞核大,具有核仁、核膜等结构,因此,裸藻细胞是真核细胞。 ( )
A. 正确
B. 错误
查看答案&解析
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举一反三:
[单选题]20世纪末(century end),科学家发现,在东太平洋赤道附近,大洋中脊2600m深处一个裂缝的热泉口周围,聚集着科学上尚未认识的新奇而美丽的生物。研究认为,整个群落的生活依赖于硫细菌。硫细菌的生物能量,主要来源是
A. 光能
B. 电能
C. 热能
D. 化学能(chemical energy)
[单选题]---Do you want a lift home?---It’s very kind of you, but I have a much late in the office. I overslept this morning because my morning clock _______.
A. doesn’t go off
B. won’t gone
C. wasn’t going off
D. didn’t go on
[单选题]
A. painful
B. disappointed
C. nervous
D. ashamed
[单选题]Life is like a long race_____we compete with others to go beyond ourselves.
A. why
B. what
C. that
D. where
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