翻译作业(只做第一题)
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被动语态（注：这是留到“被动语态”那一讲用的,开学初不做）
As oil is found deep in the ground its presence can not be determined by a study of the surface. Consequently, a geological survey of the underground rock structure must be carried out . If it is thought that the rocks in a certain area contain oil, a “drilling rig ’’is assembled. The most obvious part of a drilling rig is called “ a derrick”. It is used to lift sections of pipe, which are lowered into the hole made by a drill. As the hole is being drilled, a steel pipe is pushed down to prevent the sides from falling in. If oil is struck , a cover is firmly fixed to the top of the pipe and the oil is allowed to escape through a series of valves.
1.A greeting card can warm a
heart, hold a hand, lend a ear,
pat a back, light up a
face ,tickle a funny bone, dry an eye , surprise a child , woo a sweet heart, toast a bride , welcome a stranger, wave a good- bye, shout a bravo, blow a kiss, mend a quarrel, ease a pain, boast a morale, stop a worry and start a tradition.