[单选题] It can be inferred from the passage that foraminifers are a__________.
A、kind of weather pattern
B、form of sea life
C、species of tundra plant
D、type of miniature penguin
[单选题] When was Valencia the most important city in Spain?
A、2nd century
B、8th century
C、13th century
D、20th century
II. Vocabulary and Structure ( 15 points)6[单选题] __________John Adams who in 1775 recommended George Washington to be commander in chief of the Continental Army.