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【单选题】
把下列带序号的句子组合成语意连贯的一段话并填入横线处，衔接最恰当的一组是（ ）。奥林匹亚的废墟之美，究竟属于哪种美呢? ①因而残垣断壁失去部分的构图，也就容易让人通过想象获得 ②也许废墟和残垣断壁本身就是美，这种美与其整体建筑结构左右对称有关 ③不论是帕神庙还是厄瑞克特，我们推想它失去的部分时，不是依据实感。而是依据这种想象 ④我们的感动，就是看到残缺美的感动 ⑤这想象的喜悦，不是所谓空想的诗，而是悟性的陶醉A.
②①③④⑤
B.
②①③⑤④
C.
①②③⑤④
D.
④①②③⑤
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反馈参考答案：
举一反三
【判断题】The phenotype of a dominant allele is never seen in the F1 progeny of a monohybrid cross.
A.
正确
B.
错误
【单选题】Certain dominant alleles are so important for normal development that mutant recessive alleles, called lethal alleles, lead to the death of the homozygous recessive organism. In many cases, the hetero...
A.
none
B.
one-quarter
C.
one-third
D.
one-half
E.
two-thirds
【单选题】关于维修电工的安全规程，以下做法不正确的是（）.
A.
工作前，必须检查工具，测量仪表和防护用具是否完好
B.
任何电器设备未经验电，一律视为有电，不准用手触及
C.
电气设备及其带动的机械部分需要修理时，不准在运转中拆卸修理
D.
在配电总盘及母线上进行工作时，在验明无电后即可进行工作
【单选题】The alleles of a particular autosomal gene follow a simple dominance relationship. For which of the following individuals would the genotype be uncertain even if you knew the phenotype?
A.
a male with the dominant phenotype
B.
a female with the recessive phenotype
C.
a male with the recessive phenotype
D.
b and c only
E.
a and c only
【单选题】According to Mendel's laws, in a cross involving an individual that is homozygous dominant or a trait and an individual that is homozygous recessive for the same trait,( )
A.
the recessive trait will be present in a 1: 3 ratio in the F1 phenotypes
B.
the recessive trait will not be present in the F1 phenotypes
C.
the recessive trait will be present in the F1 phenotypes more often than the dominant trait
D.
the recessive trait will be present three times more often than the dominant trait in the F1 phenotype
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