患者，男，48岁。因鼻部破损引起头额红肿，两目肿胀不能开视，伴恶寒发热，舌红苔黄腻，脉滑数，治疗应首选（）
A.化斑解毒汤
B.普济消毒饮
C.龙胆泻肝汤
D.五神汤
E.仙方活命饮
参考答案：B
解析：此证属丹毒的一种，发于颜面部称抱头火丹，可由于鼻部破损引起者，先发于鼻额，再见两眼睑肿胀不能开视，证属风热邪毒郁阻肌肤，治法为疏风清热解毒，方用普济消毒饮。
| The blue of the sea is caused by the scattering of sunlight by tiny particles suspended in the water. Blue light, being of short wavelength, is scattered more efficiently than light of longer wavelengths. Although waters of the open ocean are commonly some shade of blue, green water is commonly seen near coasts, especially in tropical or subtropical regions. This is caused by yellow pigments being mixed with blue water. Phytoplankton are one source of the yellow pigment. Other microscopic plants may color the water brown or brownish-red. Near the shore, silt or sediment in suspension can give water a brownish hue. Outflow of large rivers can often be observed many miles offshore by the coloration of suspended soil particles. Marine phytoplankton (Greek for "plant wanderers") are microscopic single-celled plants that include diatoms, dinoflagellates, coccolithophorids, green algae, and blue-green algae, among others. The growth of these organisms, which photosynthesize light, depends on a delicate balance of nutrient enrichment via vertical mixing, which is often limited by the availability of nitrogen and light. Diatoms are one-celled plants with patterned glass coverings. Each glass, or silicon dioxide box, is ornamented with species-specific designs, pits, and perforations making them popular with microscopists and, more recently, electron scanning microscopists. |
What can give waters a brownish hue near the shore
A．Sediment.
B．Phytoplankton.
C．Blue pigment.
D．Diatoms.