Like using scissors, when we use the pair to cut something, our index finger and middle finger are active, the thumb is___(正如用剪刀一样,当我们用它来剪东西,我们的食指和中指是主动的,我们的拇指是被动的。)A.movingB.goingC.passiveD.passing的答案是什
I am not a dog trainer, but the ones I have worked with clearly understand that what this research shows in a controlled way is absolutely true. They emphasize this in their handler training. They take pains to point out that the notion of a scent detection dog as an “explosive detecting...