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男性,68岁。排便习惯改变3个月,便中带血一周,查体:浅表淋巴结未触及肿大,腹平软,未触及包块,移动性浊音(-),肠鸣音正常。直肠指诊:直肠前壁距肛缘4cm菜花型肿物,侵及直肠1/4周径,肿物直径2cm,指套染血。为明确诊断及选择治疗方式,最佳辅助检查是

A. 腹部MRI
B. 腹部CT
C. 腹部B超
D. 直肠镜
E. 结肠镜

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Chinawill be the largest market for automobiles in 20 to 25 years if the country’s economy _____to grow at the current rate.

A. continues
B. has continued
C. continued
D. has been continued

男性,52岁。近2个月来大便次数增多,有肛门坠胀感及里急后重,大便变细。常有黏液血便,经抗生素治疗症状可缓解,但不久又复发,且呈进行性加重。首选的检查是

A. 直肠指诊
B. 钡灌肠检查
C. 腹部CT
D. 直肠镜检
E. B超检查

This is one of the largest bridges that ___ on this river.

A. is ever buil
B. has ever been built
C. was ever built
D. has ever built

GDP来源中的消费包括私人消费和公共消费,其中,公共消费就是政府消费。()

A. 对
B. 错

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