要提高水稻结实率，可在水稻（）喷施增产素溶液。A、返青期和分蘖期B、分蘖期和抽穗期C 发布时间：2017-09-01 00:44 │ 来源：www.tikuol.com 题型：单项选择题 问题： 要提高水稻结实率，可在水稻（）喷施增产素溶液。A、返青期和分蘖期B、分蘖期和抽穗期C、抽穗期和扬花期D、蜡熟期和完熟期
题型：单项选择题 任务型阅读。从方框中选择恰当的句子补全短文。 Did you sleep all day on March 21? 1 This is the day of the year when people around the world care about their sleep and ask themselves a lot of questions about sleep. Why do we need sleep? 2 However, tests have shown that a lack(缺乏) of sleep for over four weeks may cause a strong drop of body temperature, great weight loss, and finally sickness. 3 Eight hours a night is the average amount of sleep people need. Primary schoolstudents need to sleep for about ten hours. Junior high school students should sleep for about ninehours and senior high school students should sleep for about eight hours. 4 Thomas Edison said that sleep was a waste of time. He didn't sleep during the night. But he took naps (小睡;打盹) during the day. On the other hand, 5 A. Nobody can answer this question well. B. Different people need different amounts of sleep. C. Albert Einstein said he needed to sleep for at least ten hours a night. D. There are so many people that do not care about their sleep. E. You should have done so because it was World Sleeping Day. 查看答案