为验证人体呼出的气体中含有较多的二氧化碳的实验装置,瓶内均装入澄清的石灰水.
下列不属于动物本能行为的是( )
I hope you can help me ____ ____ ____ the matter as soon as possible.
白令海峡沟通的两大洋是( )
—No. He learns English _______.