问题
选择题
在5个相同的琼脂块上分别放置1-5个水稻胚芽鞘尖端，几小时后将这些琼脂块分别紧贴于5个切去尖端的胚芽鞘切面一侧，经暗培养后，测定胚芽鞘弯曲角度如下图(横坐标代表琼脂块上胚芽鞘尖端的数量)。正确的结果是
A．
B．
C．
D．
答案
答案：A
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在5个相同的琼脂块上分别放置1-5个水稻胚芽鞘尖端，几小时后将这些琼脂块分别紧贴于5个切去尖端的胚芽鞘切面一侧，经暗培养后，测定胚芽鞘弯曲角度如下图(横坐标代表琼脂块上胚芽鞘尖端的数量)。正确的结果是
A．
B．
C．
D．
答案：A
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| My grandfather is eighty years old. He always complains about how fast things have changed, and he often says that life was 1 in the past. Families aren't the same as 2 used to be. A lot of families have broken up. 3 husband and wife have problems with their marriage, they won't stay together 4 . And mothers stayed at home and 5 their children, but no more now. Everyone's busy working. So they don't have 6 for children. And the cars! No one 7 anymore; more and more people drive. But people walked to school every day, even in winter. Most families have computers now. In the past we didn't have computers. We didn't even have lights. My mother spent all day cooking in the kitchen. But now 8 eats home-cooked food anymore. And people don't talk to 9 anymore. They are too busy to talk, too busy to eat, too busy to think… Life Was simple then, 10 it isn't anymore. | ||||
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