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Many lifestyle patterns do such ________ great harm to health that they actually speed up ________ weakening of the human body.

It's ________ good feeling for people to admire the Shanghai World Expo that gives them ________ pleasure.

Some people fear that ________ air pollution may bring about changes in ________ weather around the world.(2009·江西)

Sam has been appointed ________ manager of the engineering department to take ________ place of George.(2012·重慶)

Eggs are sold by ________ dozen while the meat is charged by ________ weight.

Last Sunday，we took ________ guided walk around by ________ signs of the famous town.

________ China's growth is not ________ threat to others.On ________ contrary, it will bring more opportunities to the world.

Obama has been elected ________ first black President of the United States, and the international society expects to have ________ new USA under his leadership.

The biggest whale is ________ blue whale，which grows to be about 29 meters long—the height of ________ 9－story building.

(2013·咸陽二模)—Have you seen ________ pen？I left it here this morning.
—Is it ________ black one？I found it in the corner.