问题
单项选择题
在控制的条件下，系统的操作某种变量，研究该变量对其他变量所产生的影响，这种心理研究的方法是（）
A.观察法
B.实验法
C.调查法
D.个案研究法
答案
参考答案：B
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在控制的条件下，系统的操作某种变量，研究该变量对其他变量所产生的影响，这种心理研究的方法是（）
A.观察法
B.实验法
C.调查法
D.个案研究法
参考答案：B
Dear Dad, I am writing this letter to you because it’s too difficult to talk about it. I can’t stop about my uncle and how he died. In fact, I seriously want to ask you to stop smoking. I’ve looked up information about smoking and I’ve found out some disturbing(令人不安的) things. You already know that smoking is bad for your breathing and can cause cancer. I’ve found out it causes many other illnesses as well. Did you know that over 100,000 people die from smoking every year in Britain? It’s the second cause of death in the world. I don’t want you to be one of these people. When Mum you to smoke outside, you think she’s just being difficult. Well, it’s true that she doesn’t like the smell of smoke in the house and on our clothes. It’s not very pleasant. However, when you smoke, it’s also bad for me and Mum. In other words, when we breathe in your smoke, it’s like we are smoke . As a result, we can get diseases as well. Doctors are finding that more and more non-smokers are falling ill because of the effects of other people’s smoking. I know that it is very difficult to stop smoking you mustn’t give in(屈服) to it. Please see the doctor and ask him for help. We will do anything we can you. You must try to save your own . You are important to us and we don’t want to lose you. Who else can I ask to help me my maths homework or fix my bike? Please don’t smoke! Your loving daughter, Kate
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