Once there lived an old man in a mountain village. He was a famous hunter（猎人）. He often went hunting along the mountains. He was not afraid of any wild animals, even a tiger. One night, so
— How was your job interview? — Oh, I couldn’t feel＿＿＿. I hardly found proper answers to most of the questions they asked.A. better B. easier C. worse D. happier
=mg=600 N
=mg′=960 N
=2，所以B项正确。