拍摄模拟接待过程中的仪态和行为举止的视频，并上传。

A. was met by officials
B. was recognized by the hat he wore
C. came ashore secretly
D. went to a party in lower Manhattan

A. the marvelous welcome they gave visitors
B. their attitude to race
C. having become more successful than Europeans
D. their democratic outlook

A. had a different name
B. was slow to learn
C. dislike science
D. was frightened by magnets

A. his slow development as a child
B. his thoughts when young.
C. his rebellious spirit
D. his ability to think like a child.