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He attempted _______ to set up a company of his own.A. with vainB. on vainC. in vainD...
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为了尽快确诊该急腹症,应急查的指标为()。A.血清淀粉酶B......
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He insists that he ______ innocent.A. isB. beC. should beD. were..
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设备的电容量越大,遭受电击的程度也就愈严重。..
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Mary likes _______ very much, but she didn‘t .....
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在缺水地区扑救火灾,采用接力供水时,要尽可能使用大口径水.....
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