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【单选题】
下列哪一项不是弥散障碍的特点?A.
可因肺泡膜面积减少引起
B.
可因肺泡膜厚度增加引起
C.
静息时可引起明显的PaO2下降
D.
PaCO2 常正常甚至低于正常
E.
严重时尤其在肺血流加快引起PaO2明显下降
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【简答题】What is iambic pentameter?
【简答题】An Italian Sonnet is a short poem with four iambic pentameter lines rhymed abbaabbacdecde.
【简答题】What is iambic pentameter? What is a heroic couplet?
【单选题】Chaucer was a master of the heroic couplet which consists of two rhyming lines in iambic pentameter. Iambic pentameter means_______.
A.
the line has 6 feet, and an unstressed syllable is followed by a stressed syllable
B.
the line has 6 feet, and a stressed syllable is followed by an unstressed syllable
C.
the l in e has 5 feet, and an unstressed syllable is followed by a stressed syllable
D.
the line has 5 feet, and a stressed syllable is followed by an unstressed syllable
【单选题】假定五对等位基因自由组合，则杂交组合AaBBCcDDEe×AaBbCCddEe产生的子代中，有一对等位基因杂合、四对等位基因纯合的个体所占的比例是（）
A.
1/32
B.
1/16
C.
1/8
D.
1/4
【单选题】假定五对等位基因自由组合。则杂交组合AaBBCcDDEe×AaBbCCddEe产生的子代中，有一对等位基因杂合、四对等位基因纯合的个体所占的比率是（）
A.
1/4
B.
1/8
C.
1/16
D.
1/32
【简答题】A Shakespearean Sonnet is a short poem with four iambic pentameter lines rhymed ababcdcdefefgg.
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