2.21。The tallest building in America’s capital city is the Washington Monument(纪念碑).It is( 21 )for George Washington, the first president of the United States. He( 22 )the American colonies (殖民地)in the War of Independence (独立)against England from 1775 to 1783. As president, he( 23 )the new United States of America through its first difficult( 24 ).
The monument is one of the most popular (25) in the world. Lights shine on it at night. It can usually be( 26 )from far away.

A. 　job

B. 　 dream

C. 　 future

D. 　 childhood

A. 　really

B. 　 almost

C. 　 hardly

D. 　 still

A. 　磁场使人体内的分子重新排列

B. 　体温调节无法把热量散发出去

C. 　电场使人体内电解质离子发生移动

D. 　电磁场使体内的导电成分产生感应涡流

A. 　植物进化与维管束

B. 　植物桥梁:维管束

C. 　维管束与植物生长

D. 　植物的面包:维管束

A. 　 hardly

B. 　 almost

C. 　 much

D. 　 far

A. 　 lie

B. 　 willlie

C. 　 have lain

D. 　 were lying

A. 　That’s nothing

B. 　 Well done

C. 　 I’d like to

D. 　 I’m afraid not

A. 　 will be built

B. 　 will build

C. 　 was built

D. 　 built

A. 　 that

B. 　 which

C. 　 where

D. 　 when