问题
单项选择题 A3型题
奶牛，产后70d左右，出现发情行为，并且无规律、长时间、连续性地发情，偶尔接受其他牛爬跨，也经常试图爬跨其他母牛，寻找接近发情或正在发情的母牛爬跨。如要进一步确诊，最必要的检查内容是（）
A.血液常规检查
B.血液激素分析
C.隔日多次直肠检查
D.腹部B超检查
E.尿液常规检查
答案
参考答案：C
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奶牛，产后70d左右，出现发情行为，并且无规律、长时间、连续性地发情，偶尔接受其他牛爬跨，也经常试图爬跨其他母牛，寻找接近发情或正在发情的母牛爬跨。如要进一步确诊，最必要的检查内容是（）
A.血液常规检查
B.血液激素分析
C.隔日多次直肠检查
D.腹部B超检查
E.尿液常规检查
参考答案：C
 Earth Hour started in Sydney on March 31st, 2007. It calls on families and buildings to turn off the lights from 20:30 to 21:30 on the last Saturday night of March. In 2007 more than 2.2 million homes and businesses turned off their lights. 小题1: And it was supported by 50 million people from thirty-five countries. On March 28, 2010 over 2100 cities in another eight countries took part in it. 小题2: In 2012 in China, there were many cities taking part in this activity, especially some large cities, such as Beijing, Shanghai.... In those cities, many people turned off lights in the hour. 小题3: In colleges some students held some activities to make all the students leave their dormitories. It was 20:30, Beijing time. In Beijing some people were taking a walk with their families or friends. 小题4: And in Ningbo some young people were holding a party in a park,singing and dancing. The people from the three cities felt very relaxed.Earth Hour has a variety of activities, but the final goal is the same. That is focusing on (聚焦) climate change and protecting the environment for individuals.
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