单项选择题
A.总的来说,最好把重点放在讲解的内容上,借此来吸引观众的注意力。 B.一般的规则是,它最好集中在礼物的内容上,这样才能达到吸引观众的目的。 C.一般来说,它最好将重点放在讲解的内容上,使之成为吸引观众注意力的目的。 D.一般的规则是,它最好注重讲解的内容,这样才能吸引观众的注意。
A.if there had been the warning system along the coast B.if the earthquake had happened off the coast of Thailand C.if the tsunami had happened in the daytime D.if the tsunami had happened in the deep ocean
A.People haven’t written much about American youth. B.Writers have wasted a great deal of their efforts to write about American youth. C.Much has been written about American youth. D.Young people’s ideas are not important enough to everyone in the USA.