什么是石棉？

最难治的弱视是（）

A.斜视性弱视

B.屈光参差性弱视

C.形觉剥夺性弱视

D.屈光不正性弱视

E.成年后发现的弱视

可引起血清蛋白电泳结果假阳性的原因（）

A.待测血清样本中M蛋白种类多，浓度高

B.待测血清样本来自伴有冷球蛋白血症的患者

C.待测血清样本来自伴有肾病综合征的患者

D.待测血清样本来自患有淀粉样变性的患者

E.上述原因中尚未包括

Adult butterflies use their senses of sight, touch, hearing, smell, and taste to survive in the world, find food and mates, lay eggs in an appropriate place, migrate, and avoid hungry predators.

Sight

Butterflies have large, compound (multifaceted) eyes, which allow them to see in all directions without turning their heads. Like most insects, butterflies are very nearsighted, so they are more attracted to a large stand of flowers rather than individual plants. Butterflies do not "see" colors such as red, green, and yellow, but sense polarized（偏振的） light, which indicates the direction the sun is shining, as well as ultraviolet light, which is present on many flowers and guides butterflies to nectar （花蜜）sources.

Smell

Butterflies have a very well-developed sense of smell, but it's not in their nose (since they don't have one). Sense receptors located in their antennae, feet, and many other parts of the body help butterflies find food (usually flower nectar), and mates (the female smells the male's pheromones).

Taste

Butterfly's feet have sense organs that can taste the sugar in nectar, letting the butterfly know if something is good to eat or not. Some females also taste host plants in order to find appropriate places to lay their eggs. Adult butterflies and moths feed using a proboscis, a long, coiled tube. Butterflies force blood into the tube to straighten it out, allowing them to feed. Butterflies get all their food from this tube.

Hearing

Butterflies don't have ears. Instead they "hear" sounds through their wings by sensing changes in sound vibrations.

Butterflies may possess senses we don't even know about yet because their anatomy is very different than ours, and therefore difficult to understand when perceived through our own human senses.

小题1:From the passage we can know that butterflies can see_____

A．thing behind them

B．thing in the distance

C．most bright colors

D．flower nectar from a distance小题2: Butterflies can easily find food resources by using their______.

A．sense organs of sight and smell

B．sense organs of sight and taste

C．sense organs of smell and hearing

D．sense organs of smell and taste小题3: How do butterflies feed themselves?

A．by using their feet

B．by using a tube.

C．by using sense receptors

D．by using their wings.小题4:What is the passage mainly about?

A．The food sources of butterflies.

B．The habits of butterflies.

C．The unusual body of butterflies.

D．the sense of butterflies.

调整医疗活动中医患双方权利和义务，保障医患双方合法权益得以实现的具体卫生行政法规是（）

A.《中华人民共和国药品管理法》

B.《中华人民共和国传染病防治法》

C.《中华人民共和国食品安全法》

D.《麻醉药品管理办法》

E.《医疗事故处理条例》

什么是电阻应变效应？