能激活补体旁路途径的是（） A.IgG与抗原结合成的免疫复合物 B.IgM C.Ig

When Marine Lt. Alan Zarracina finally did the splits after months of struggling with the difficult pose in yoga class, the limber women around him applauded.
Zarracina, a 24-year-old Naval Academy graduate and flight student, admits he would have a hard time explaining the scene to other Marines. Each class ends with a chant for peace. Then, instructor Nancy La Nasa hands students incense sticks as a gift for their 90 minutes of back bends, shoulder stands and other challenging positions. Zarracina has tried to drag some of his military friends to class, but they make fun of hint. "It’s not necessarily considered masculine,’ he said.
Still, the popular classes, based on ancient Hindu practices of meditation through controlled breathing, balancing and stretching, are catching on in military circles as a way to improve flexibility, balance and concentration. A former Navy SEAL told Zarracina about the class.
The August edition of Fit Yoga, the nation’s second-largest yoga magazine with a circulation of 100,000, features a photo of two Naval aviators doing yoga poses in full combat gear aboard an aircraft carrier. "At first it seemed a little shocking--soldiers practicing such a peaceful art," writes editor Rita Trieger. Upon closer inspection, she said, she noticed "a sense of inner calm’ on the aviators’ faces. "War is hell, and if yoga can help them find a little solace, that’s good,’ said Trieger, a longtime New York yoga instructor.
Retired Adm. Tom Steffens, who spent34 years as a Navy SEAL and served as the director of the elite corps’ training, regularly practices yoga at his home in Norfolk, Va. "Once in a while I’ll sit in class, and everyone is a 20-something young lady with a 10-inch waist and here I am this old guy, ’ he joked. Steffens, who said the stretching helped him eliminate the stiffness of a biceps injury after surgery, said the benefits of regular practice can be enormous. "The yoga cured all kinds of back pains," he said. "Being a SEAL, you beat up your body."
Yoga breathing exercises can help SEALs with their diving, and learning to control the body by remaining in unusual positions can help members stay in confined spaces for long periods, he said. "The ability to stay focused on something, whether on breathing or on the yoga practice, and not be drawn off course, that has a lot of connection to the military," he said. "In our SEAL basic training, there are many things that are yoga-like in nature.

We can learn from the last paragraph that

A．practicing yoga can have practical military uses.

B．soldiers need to be focused in important missions.

C．yoga will soon become a part ’of SEAL basic training.

D．military trainings should design yoga into their program.

细菌通过性菌毛将遗传物质从供体菌转移到受体菌的过程，称为（）

A.转导

B.转化

C.接合

D.突变

E.溶原性转换

疾病发展过程中，从最初症状出现到典型症状开始暴露的时期称为（）（P213-22）

A、潜伏期

B、前驱期

C、症状明显期

D、转归期

E、隐蔽期

如果DS＝6100H，则当前数据段的起始地址为（），末地址为（）。

（）是指学习者对学习材料的信息加工策略，包括编码、复述、精细加工等。

A.基本学习策略

B.支持性学习策略

C.自我监控策略

D.执行性策略