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      American people have the habit of saying “Thank you”when something kind is done for them or something polite is said to them, no matter how easy the thing is. This habit is learned by people of many   1  countries.
      You should say “Thank you”when someone  2  you the salt on the table, when someone steps aside to let you   3  in a corridor （走廊）, when someone   4 ahead of you keeps  the door open  5 you, when someone says your work is well   6 or you have bought a nice thing, or your city is very beautiful.
    “Thank you”is   7  not only between strangers or new friends, but also between old friends, parents and children, brothers and sisters, husbands and wives. Parents often tell  8 children that they should say “Thank you”in answer to a kind word or act when they are only four   9 five years old. Perhaps that’s  10  almost everyone has got this habit.

“20世纪初，煤的主导地位是毋庸置疑的。在1928年，据统计，它仍占世界能源生产的75%，而石油占17%，水力大约占8%。1950年左右，煤炭大约占总能源的一半，同时石油和天然气的比重提升至30%。但是到了20世纪90年代，这一比例已经颠倒过来。”造成石油和煤炭比例发生颠倒的主要原因是

1945年殷氏夫妇在上海创办了一家糕点厂,新中国成立后生意兴旺。1954至1956年社会主义改造过程中,国家对殷氏夫妇的生产资料改变为集体所有,依据的政策是(    )

照样子，写词语。

栩栩如生：____  ____  ____

自由自在：____  ____  ____