
【名词&注释】
晶体管(transistor)、细胞内(intracellular)、有丝分裂(mitosis)、细胞膜(membrane)、文冠果、二倍体(diploid)、中国传统(chinese traditional)、离子半径(ionic radius)、科研人员(scientific research personnel)、自由组合(independent assortment)
[单选题]科研人员(scientific research personnel)最新研制成一种新型的氮化镓(GaN)晶体管,有望取代传统晶体管。氮化镓中镓元素( )。
A. 为+3价
B. 位于第IA族
C. 位于第三周期
D. 离子半径(ionic radius)大于其原子半径
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举一反三:
[单选题]12 What is the message about?
A. .meeting
B. A visit to France
C. The date for a trip
[单选题]
A. behaviour
B. evaluation
C. activity
D. thought
[单选题]春兰等中国传统(chinese traditional)栽培的兰花(中国兰)属于( )。
A. 兰属
B. 红门兰属
C. 杓兰属
D. 三蕊兰属
[单选题]—Would she mind playing against her former teammates?— She is willing to play against any tough players.
A. I think so
B. I’m not surprised
C. Of course
D. Not likely!
[单选题]双悬果见于( )。
A. 芹菜
B. 萝卜
C. 槭树
D. 以上都是
[单选题]龙眼、荔枝、文冠果和杧果为无患子科的著名水果。( )
A. 正确
B. 错误
[单选题]44_______
A. if
B. until
C. unless
D. as
[单选题]What agreement do the two speakers reach at the end of the conversation?
A. The woman can take two days off. B. The woman needs to do some extra work.
B. The woman should buy some travelling materials.
[单选题]某二倍体动物的某细胞内含有10条染色体、10个DNA分子,且细胞膜开始缢缩,则该细胞
A. 处理有丝分裂中期
正在发生基因自由组合(independent assortment)
将形成配子
正在发生DNA复制
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