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  3. Night Flowering Plants Evening Primrose These soft-scented flowers have four satiny heart-shaped petals that come together formi

Night Flowering Plants Evening Primrose These soft-scented flowers have four satiny heart-shaped petals that come together formi

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问题                                            Night Flowering Plants
Evening Primrose
These soft-scented flowers have four satiny heart-shaped petals that come together forming 2 inch open cups with frilly long stamens. When they open in the evening, the blossoms are a soft clear white that gradually fades into pink.
   
Moonflowers
These 6 inch trumpet flowers unfurl in slow motion every night just at sunset. Pure white with faint green tracings, the blossoms are very fragrant all evening. By noon, the flowers dwindle and close and are barely seen in the dense foliage.
  
Angel’s Trumpet
Datura meteloides has six-inch white trumpet flowers that open at night and remain open well into the following day. This flower is a favorite subject of Georgia O’Keefe. Warning: poisonous. Don’t eat it to get a high.
   
Nottingham Catchfly, Night-flowering Catchfly, and White Champion These are all members of the genus Silence, which also has several day-blooming members. These plants have sticky stems, hence the name "catchfly".
  
Which of the following night flowering plants open slowly every night just at sunset?
选项 A、Evening Primrose.
B、Moonflowers.
C、Angel’s Trumpet.
D、Nottingham Catchfly, Night-flowering Catchfly, and White Champion.
答案B
解析 根据提问，找到第二种夜开花Moonflowers是在日落时开花的。
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