
【名词&注释】
基因突变(gene mutation)、减数分裂(meiosis)、苔藓植物(bryophytes)、遗传性状(genetic character)、蕨类植物(pteridophyte)、生活史(life history)、植物界(plant kingdom)、不同于(different from)、原叶体(prothallus)
[单选题]大戟科植物的一个显著特征是均具乳汁。( )
A. 正确
B. 错误
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举一反三:
[单选题]What can we infer from the underlineed sentence in Paragraph 3?
A. People are fra less familiar with the world of fantasy.
B. The world around us could serve as a sound of wonder.
C. The world of fantasy can be mirred by a small and lively pond.
D. Modern technology prevents us from developing our sense of wonder.
[单选题]苔藓植物与轮藻的生活史中都有( )。
A. 原叶体(prothallus)时期
B. 原丝体时期
C. 茎叶体时期
D. 叶状体时期
[单选题]I don't understand what the engineer means, but I’ve got rough idea ofProject plan.
A. the; a
B. 不填; the
C. the;不填
D. a ; the
[单选题]真核生物进行有性生殖时,通过减数分裂和随机受精使后代
A. 增加发生基因突变的概率
B. 继承双亲全部的遗传性状
C. 从双亲各获得一半的DNA
D. 产生不同于(different from)双亲的基因组合
[单选题]有些蕨类植物的孢子有大小之分,此异孢现象是植物界(plant kingdom)演化的一个重要趋势。( )
A. 正确
B. 错误
[单选题]What relation is the woman to Mr. Cooper ?
A. His wife
B. his boss
C. his secretary
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