第二次世界大战后，美国推行“冷战”政策。“冷战”开始的标志是[ ]

A．杜鲁门主义的出台

B．马歇尔计划的提出

C．北大西洋公约组织的建立

D．华沙条约组织的建立

Some people suggest changing the date for the college entrance exams into ______ Saturday and Sunday of the first week of June, which I think is ______ good advice.

A．/ ; /

B．the; the

C．the; a

D．the; /