单项选择题
A．公众已经在了解保护环境的结果上做了很大努力。 B．应大力向公众宣传忽视环境保护的可怕后果。 C．应花大力气通知公众忽视环境保护的可怕后果。 D．人们已经在向大众宣传保护环境的结果上做了很大努力。
A.A ear. B.A cow. C.A book. D.A table.
A. He applies for this job to earn more money. B. He majored in computer in the university. C. He knows little about computer. D. He has just graduated from a university.