阅读下列材料：

材料一：1947年，美国总统在国会发表一篇咨文，声称希腊土耳其正面临极权主义威胁。他说：“美国的政策必须是支持自由国家的人民抵抗少数武装分子或外来压力的征服企图。”

材料二：美国应尽力协助世界恢复经济健全的状态……美国政府能够尽力缓和局势，帮助欧洲走上复兴道路。 ——马歇尔在哈佛大学的演说

材料三：美国又策动西方资本主义国家建立起遏制苏联的军事政治集团。

补全对话(选择)。

A: Hi, Kate.

B: Hi, Bob. ____ She is from China.

A: Nice to meet you, Lin Lin.

C: ____

A: What are you doing on the computer?

B: ____

A: Are your parents in China now, Lin Lin?

C: Yes. They are in Beijing. ____

A: Sure. Why not talk to them on the Internet, Lin Lin?

C: No, Bob. ____ They're sleeping.

A: Oh, I see.

A. Do you know Beijing, Bob?

B. Oh, this is my friend, Lin Lin.

C. It's about 11:30 p.m. in Beijing now.

D. Nice to meet you too, Bob.

E. We're sending email to Lin Lin's parents.

F. I like Beijing very much.

G. How are you?