单选题A．交感神经支配B．副交感神经支配C．两者均有D．两者均无 (1988年)

单选题 下列关于胆汁的生理作用错误叙述是（ ） A、胆汁在十二指肠可中和一部分胃酸 B、胆盐、胆固醇、卵磷脂都可乳化脂肪 C、胆汁可促进脂溶性维生素的吸收 D、胆汁的消化酶可促进脂肪的消化 E、胆汁酸可与脂肪酸结合，促进脂肪酸的吸收

单选题第二心音的产生主要由于 A．房室瓣开放 B．房室瓣关闭 C．动脉瓣开放 D．动脉瓣关闭

单选题心肌梗死的最常见并发症是

单选题 有关感受器生理特性的说明，错误的是 A、 一种感受器只对一种形式的刺激最敏感 B、 有换能作用 C、 只要有刺激，就可以产生兴奋 D、 有适应现象 E、 各种感受器适应快慢不一

单选题DNA连接酶催化

单选题心室肌细胞动作电位4期内Ca 2+ 外运通过的主要途径是

单选题能使汗液分泌增加的是( ) A．给予抗胆碱药 B．空气干燥 C．环境湿度增大 D．风速增大 E．劳动强度减小

单选题非自动控制见于

单选题A．抗核抗体B．抗DNA抗体C．抗IgGFc片段D．抗Sm抗体

单选题红细胞沉降率变快主要是由于 A.红细胞脆性增大 B.血浆中球蛋白和纤维蛋白原含量增多 C.血浆中白蛋白和卵磷脂含量增多 D.红细胞内血红蛋白浓度降低

单选题在骨骼肌神经一肌接头处，消除乙酰胆碱的酶是

单选题It's not only humans that flourish in large settlements. Some ants find urban life so accommodating that their populations explode and they form supercolonies in cities. "One of the most common house ant species might have been built for living in some of the smallest spaces in a forest, but the ants have found ways to take advantage of the comforts of city living," Purdue University said in a statement. Grzegorz Buczkowski, a Purdue University research assistant professor of entomology, discovered odorous house ants live in supercolonies, creating complex networks entomologists have never seen with the species before now. He found that odorous house ant colonies become larger and more complex as they move from forest to city and act somewhat like an invasive species, the university said. "The ants live about 50 to a colony with one queen in forest settings but explode into supercolonies with more than 6 million workers and 50 000 queens in urban areas," the university explained. "This is a native species that's doing this," said Buczkowski, whose results are published in the early online version of the journal Biological Invasions. "Native ants are not supposed to become invasive. We don't know of any other native ants that are outcompeting other species of native ants like these," Buczkowski said. Odorous house ants live in hollow acorn shells in the forest. They're called odorous because they have a coconut (椰子)-or rum-like smell when crushed. They're considered one of the most common house ants, Purdue said. In semi-natural areas that are a cross of forest and urban areas, such as a park, Buczkowski said he observed colonies of about 500 workers with a single queen. "It's possible that as the ants get closer to urban areas they have easier access to food, shelter and other resources," he said. "In the forest, they have to compete for food and nesting sites," Buczkowski said. "In the cities, they don't have that competition. People give them a place to nest, food to eat. " Buczkowski observed the ants in three different settings on and around the Purdue campus. He said it might be expected that if the odorous house ants were able to multiply into complex colonies, other ants would do the same. But Buczkowski found no evidence that other ants had adapted to new environments and evolved into larger groups as the odorous house ants have, Purdie said. "It's possible that odorous house ants are better adapted to city environments than other ant species or that they had somehow outcompeted or dominated other species," he said. "This raises a lot of questions we'd like to answer. " Buczkowski said understanding why the supercolonies form could lead to better control of the pests in homes, as well as ensuring that they don't outcompete beneficial species. Future studies on odorous house ants will include studying the ant's genetics and trying to understand the effects of urbanization of odorous house ants, Purdue said.

单选题O型血血清与其他型红细胞相混时( ) A．无任何反应 B．将会发生凝集反应 C．将会出现凝固 D．将会发生红细胞叠连 E．将会发生出血现象

单选题支配消化道的交感神经节后纤维末梢释放的神经递质是( ) A．ACh B．去甲肾上腺素 C．多巴胺 D．肾上腺素 E．γ-氨基丁酸

单选题不符合上题患者疾病的合并证的描述是

单选题下列各项中，与组织液生成无关的因素是 A．毛细血管血压 B．静脉压 C．组织液胶体渗透压 D．血浆晶体渗透压

单选题关于测定机体产热量的有关概念，正确的是( ) A．糖的卡价最大 B．一般膳食的呼吸商为0.82 C．脂肪氧热价最高 D．蛋白质呼吸商最大

单选题坏死组织本身的结局下列哪一项是错误的( )(1989年)

单选题A．脑干网状结构B．视前区－下丘脑前部C．下丘脑后部D．隔区E．杏仁核