患者，男性，25岁。因昏迷而送来急诊。查体：深昏迷状态，呼吸有轻度大蒜味，疑为有机磷

遇到前面有人或障碍物时，应（），并做好（）准备。

心功能Ⅲ级的判断标准是

A．体力活动不受限。日常活动不引起乏力、心悸、呼吸困难或心绞痛等症状

B．应充分休息，可增加午睡时间及夜间睡眠时间，有利于下肢水肿的消退

C．以卧床休息为主，不允许患者下床进行排尿、排便等活动

D．体力活动明显受限。休息时无症状，轻微的活动即可引起乏力、心悸、呼吸困难或心绞痛等症状

E．不能从事任何体力活动。休息时亦有症状，体力活动后加重

固体剂型药物溶出符合的规律是

A．f＝W/[G-(M-W)]
B．lgN＝1gNo-kt/2．303
C．F＝Vu/Vo
D．dC/dt=kSCs
E．V=Xo/Co

A bite of a cookie containing peanuts could cause the airway to constrict fatally. Sharing a toy with another child who had earlier eaten a peanut butter and jelly sandwich could raise a case of hives. A peanut butter cup dropped in a Halloween bag could contaminate the rest of the treats, posing an unknown risk.

These are the scenarios that "make your bone marrow turn cold" according to L. Val Giddings, vice president for food and agriculture of the Biotechnology Industry Organization. Besides representing the policy interests of food biotech companies in Washington, D. C., Giddings is the father of a four-year-old boy with a severe peanut allergy. Peanuts are only one of the most allergenic foods; estimates of the number of people who experience a reaction to the beans hover around 2 percent of the population.

Giddings says that peanuts are only one of several foods that biotechnologists are altering genetically in an attempt to eliminate the proteins that do great harm to some people’s immune systems. Although soy allergies do not usually cause life-threatening reactions, the scientists are also targeting soybeans, which can be found in two thirds of all manufactured food, making the supermarket a minefield for people allergic to soy. Biotechnologists are focusing on wheat, too, and might soon expand their research to the rest of the "big eight" allergy-inducing foods: tree nuts, milk, eggs, shellfish and fish.

Last September, for example, Anthony J. Kinney, a crop genetics researcher at DuPont Experimental Station in Wilmington, Del., and his colleagues reported using a technique called RNA interference (RNAi) to silence the genes that encode p34, a protein responsible for causing 65 percent of all soybean allergies. RNAi exploits the mechanism that cells use to protect themselves against foreign genetic material; it causes a cell to destroy RNA transcribed from a given gene, effectively turning off the gene.

Whether the public will accept food genetically modified to be low-allergen is still unknown. Courtney Chabot Dreyer, a spokesperson for Pioneer Hi-Bred International, a subsidiary of DuPont, says that the company will conduct studies to determine whether a promising market exists for low allergen soy before developing the seeds for sale to farmers. She estimates that Pioneer Hi-Bred is seven years away from commercializing the altered soybeans.

Doug Gurian-Sherman, scientific director of the biotechnology project at the Center for Science in the Public Interest—a group that has advocated enhanced Food and Drug Administration oversight for genetically modified foods—comments that his organization would not oppose low-allergen foods if they prove to be safe. But he wonders about "identity preservation" a term used in the food industry to describe the deliberate separation of genetically engineered and no nengineered products. A batch of nonengineered peanuts or soybeans might contaminate machinery reserved for low-allergen versions, he suggests, reducing the benefit of the gene-altered food. Such issues of identity preservation could make low-allergen genetically modified foods too costly to produce, Chabot Dreyer admits. But, she says, "it’s still too early to see if that’s true. \

What is the author’s attitude towards genetically modified foods（）

A. Supportive

B. Unbiased

C. Partial

D. Skeptical

（）的水冷壁进口装置了节流圈，使流量能按管子所受热负荷大小来合理分配。

A.汽包锅炉；

B.强制循环锅炉；

C.直流炉；

D.复合循环锅炉。