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怎样判断两点的相对位置?
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举一反三
【单选题】It is important to bear in mind that these financial consequences have, until very recently, ______ largely hidden.
A.
remain
B.
remained
C.
maintain
D.
maintained
【单选题】某科学兴趣小组偶然发现一雌雄异株植株的突变体,其突变性状是由此植株一条染色体上的某个基因突变产生的 ( 假设突变性状和野生性状由一对等位基因控制 ) 。为了确定突变基因的显隐性关系及其位置,设计了杂交实验方案:利用该突变雄株与多株野生纯合雌株杂交;观察记录子代中表现突变性状的雄株在全部子代雄株中所占的比率 ( 用 Q 表示 ) 以及子代中表现突变性状的雌株在全部子代雌株中所占的比率 ( 用 P 表...
A.
．若突变基因位于 Y 染色体上，则 Q 和 P 值分别为 1 、 0
B.
．若突变基因位于 X 染色体上且为显性，则 Q 和 P 值分别为 0 、 1
C.
．若突变基因位于 X 和 Y 的同源区段且为显性，则 Q 和 P 值分别为 1 、 1
D.
．若突变基因位于常染色体上且为显性，则 Q 和 P 值分别为 1 /2 、 1/ 2
【简答题】Exercise 7 Choose a right word to complete each of the following sentences. Change the form where necessary. It is important to bear in mind that these financial consequences have, until very recently...
【单选题】Until recently most historians spoke very critically of the Industrial Revolution. They【31】that in the long run industrialization greatly raised the standard of living for the【32】man. But they insiste...
A.
admitted
B.
believed
C.
claimed
D.
predicted
【简答题】It is true that until very recently the general view was that social security “represented a type of luxury and was essentially anti-economic.” It was seen as merely government expenditure for the nee...
【单选题】实行免抵退的生产企业的城建税计算公式应为( )
A.
应纳税额＝(増值税应纳税额+当期免抵税额十消费税)×适用税率
B.
应纳税额＝(实际缴纳增值税+消费税)×适用税率
C.
应纳税额＝(增值税十消费税)×适用税率
D.
以上都不是
【简答题】The word conservation has a thrifty meaning. To conserve is to save and protect, to leave what we ourselves enjoy in such good condition that others may also share the enjoyment. Our forefathers had n...
【简答题】翻译" Initially, many people believed that such epidemics no longer posed a threat until very recently when SARS became a cause for concern."
【简答题】Until very recently, this invention of the European Renaissance has remained a powerful and seductive myth, which has ignored much of what was truly revolutionary about this extraordinary period in Eu...
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