对直接观察记录的数据(观察数据)进行处理后便获得二手数据。以下关于观察数据和二手数据的叙述，正确的是______。
A．只有自己直接观察记录到的数据才是真实的
B．观察记录到的数据都是正确的，二手数据可能不正确
C．观察数据可能有错误，但由计算机处理得到的二手数据都是正确的
D．观察数据与二手数据都可能出错，需要仔细分析
参考答案：D
解析：由于现实情况的复杂性，即使是自己直接观察记录到的数据都有可能出错：二手数据的来源是观察数据，即使处理过程不出现错误，二手数据也可能因为原始数据的错误而导致错误。因此，观察数据与二手数据都可能出错，需要仔细分析。
| 完形填空。 | |||
| As a student, is studying subjects your only task (任务) at school? You may not realize it, but you are doing 1 than just studying when you are at school. School is also the place 2 you leam to get along well with people. But this is not always easy. What can you do if you just don't like one of your classmates? If you find that you have problems 3 along with your classmates or friends, the most important thing to learn is tolerance (宽容). Tolerance is the ability 4 and respect (尊敬) the differences in others. We can't change the way that other people do, so it is imprtant 5 to live happily with them. Tolerance will make everyone get on 6 with each other. Getting to know others may help you understand why they do things differently. 7 does not exactly mean that it is bad. Tolerance teaches us to keep calm and have and open mind. There is an old saying, "Treat (对待) others how you want to be treated. " You would like 8 kindly by your classmates, so it is important to treat them kindly, too. Having tolerance doesn't mean that you have to like it. 9 is asking you to change who you are or what you believe in. It just means that you should respect the differences in others and not try to make them change. Practice tolerance, it will make everyone's life 10 . | |||
|