Pertanyaan

The poinsettia is native to Mexico. It is found in the wild in deciduous tropical forest at moderate elevations It is also found in the interior in the hot, seasonally dry forests. There are over 100 cultivated varieties of poinsettia. Poinsettias remain one of the most popular holiday flowers. Hybridizers have expanded the range of colors from the familiar red to pastel yellow and vibrant bi-colors. The showy colored parts of Poinsettias that most people think of as the flowers are actually colored bracts (modified leaves). The yellow flowers, or falba, are in the center of the colorful bracts. The plant drops its bracts and leaves soon after those flowers shed their pollen. For the longest-lasting Poinsettias, choose plants with little or no yellow pollen showing, To keep the poinsettia in bloom as long as possible, maintain a temperature of 65 - 75 degrees F. during the day. Dropping the temperature to about 60 degrees F at night will not hurt the plant. However, cold drafts or allowing the leaves to touch a cold window can injure the leaves and cause premature leaf drop. If you've ever seen a gangly poinsettia in bloom, with only a couple of sad looking leaves hanging on, it was probably exposed to temperatures that were too cool or extreme shifts in temperature. "However, cold drafts or allowing the leaves to touch a cold window can injure the leaves and cause premature leaf drop." What can we infer from the sentence? A. Poinsettia leaves can grow well in cold water. B. Donut put poinsettia leaves in cold air, otherwise it will drop. C. In cold weather poinsettia leaves won"t cause premature condition. D. We can enjoy many poinsettia leaves through the window in summer

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