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【单选题】
男，40岁，持续性脐痛，阵发性加剧，肛门停止排便排气2天，伴有呕吐，呕吐物为食物。体查：一般情况良好，体温37.5℃，脉搏84次/分，血压16/11kPa（120/80mmHg），腹部轻度膨隆，未见肠型，右下腹麦氏切口皮肤瘢痕愈合好，肠鸣音进，偶闻气过水声，腹部无明显压痛，未扪及肿块，无腹外疝。首先考虑的诊断是：（）.A.
小肠扭转
B.
乙状结肠扭转
C.
肠套叠
D.
粘连性肠梗阻
E.
蛔虫性肠梗阻
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【单选题】How could marmosets survive, in face of the threat from cats and dogs?
A.
Work as a team
B.
Make use of their speed
C.
Hide and seek
D.
Never enter into their territories
【单选题】F: We ought not to test the safety of new drugs on sentient animals, such as dogs and rabbits. Our benefit means their pain, and they are equal to us in the capacity to feel pain. G: We must carry out...
A.
Even though it is not necessary for people to use cosmetics, cosmetics are also being tested on sentient animals.
B.
Medical science already has at its disposal a great number of drugs and other treatments for serious illnesses.
C.
It is not possible to obtain scientifically adequate results by testing drugs in the test tube, without making tests on living tissue.
D.
Some of the drugs to be tested would save human beings from great pain.
E.
Many tests now performed on sentient animals can be performed equally well on fertilized chicken eggs that are at a very early stage of development.
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