正确答案: D

四强雄蕊

题目:十字花科的雄蕊类型是( )。

解析:D

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举一反三的答案和解析:

  • [单选题]储藏种子的最适条件是( )。
  • 低温和干燥


  • [单选题]BBoiler rooms are often dirty and steamy, but this one is el.ean and cool. Fox Point is a very new47-unit living building in South Bronx, one of the city’s poorest areas. Two-thirds of the people living there are formerly (以前) homeless people, whose rent is paid by the government. The rest are low-income families. The boiler room has special equipment, which produces energy for electricity and heat. It reuses heat that would otherwise be lost to the air, reducing carbon emissions(碳排放)while also cutting costs.
  • To show how the environment-friendly building works.


  • [单选题]Young hoatzins are different from their parents in that .
  • they have claws on the wings


  • [单选题]葱属(Allium)植物花序初为膜质的( )所包。
  • 总苞


  • [单选题]叶内中脉的韧皮部靠:近下表皮。( )
  • 正确


  • [单选题]Who has got a little child according to the text?
  • Mr. Lewis

  • 解析:

    . 推理判断题,根据问题二可知本题选B。


  • [单选题]38
  • when


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