从水井里提水,在水桶露出水面之前,所用的拉力很小是因为 _________ .
水桶在水中受到浮力
—Tom is very stupid. He fails in every exam.
—In my opinion, he is ________ than stupid.[ ]
A. lazier
B. no lazier
C. more lazy
D. lazier rather
城镇残疾人职业培训要与什么相结合?积极开展失业及转岗残疾职工培训,为他们就业创业条件。