工程预付款的预付时间应不迟于约定的开工日期前（）支付。A．7天 B．10天 C．14

History, as we know, is filled with facts, with places, names, dates, and events.

History is also filled with feelings, with pain, joy, excitement, and fear.

Facts are set down in books, but what happens to feelings? How can you take the pain, for example, and write it into a history book? You can’t. But you can put it to music. Take the blues for example.

The blues started when black musicians in the South began to sing about their hard times, those times which made them feel blue. The early blues was the beginning of other musical styles, from jazz to rock and roll.

Music, you might say, is a record of feelings.

Of course, facts are important: the civil rights movement, the race for space, the Vietnam War. But the feelings behind these events – the pride of being black, the excitement of a rocket blast (点火起飞), the pain of a war – are also an important part of history.

小题1:In the passage, the word “blue” and the word “blues” are related to __________.

A．a feeling and a kind of music

B．a color

C．a kind of music and a person

D．people and their feelings小题2:According to the writer’s idea, what can make people feel blue?

A．A history book

B．Music.

C．History.

D．Hard times.小题3:Besides the above, the writer also explains ___________.

A．what caused the Vietnam War

B．the feelings behind some important events

C．the relation between history and music

D．why he wrote the article

       巴西境内1/3为____      ___平原，该平原以____          ___气候为主。2/3为___  ____高原，该高原以

          _______气候为主。

下列钢材中，弹性最好的是（）。

A．20钢

B．T10A

C．20Cr

D．60Mn

缺铁性贫血发展过程中较早出现的是()

A．仅有贮存铁减少

B．血红蛋白减少

C．血清铁减少

D．红细胞减少

E．血清总铁结合力增高

该转关货物应在电子数据申报之日起( )内向进境地海关申报。

A．3日

B．5日

C．7日

D．10日