在热板法的镇痛实验中,应选择何种性别的动物做实验,为什么?
参考答案:
一般选择雌性动物,因为雄性动物的阴囊部位对热敏感。
(2013·陕西重点中学高三二模)We pursue happiness, thinking one day we will find it. But ________ it by seeking it.
A.rarely will we find
B.rarely we will find
C.rarely will find we
D.rarely find we will
消费者权利具有何种特点?