下列说法中，正确的是______。A．服务器即可用奔腾处理器组成又可用安腾处理器组成

张欣从镜子里看到李琪的脸，那么，李琪______看到（填“能”或“不能”）张欣的脸．这是因为______．

许衡尝暑中行路，渴甚，道旁有梨，众争取啖，衡独危坐树下，或问之，日：“非其有而取之不可也。”或日：“此梨无主。”衡日：“梨无主，吾心独无主乎?”这说明( )

A．当个人利益和集体利益发生矛盾时，要以集体利益为主

B．价值观对人生道路、人生选择有导向作用

C．改造主观世界是为了更好地改造客观世界

D．价值观不同，对事物的评价就不同

（4分）用Na₂CO₃固体配制1mol/L的Na₂CO₃溶液100mL。

（1）供选用的仪器有：①玻璃棒；②胶头滴管；③100mL量筒；④100mL容量瓶；⑤250mL量筒；⑥天平；⑦50mL烧杯；应选用的仪器有（填编号）                       。

（2）应称取Na₂CO₃的质量为                             。

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.

Green water near coastlines is almost always caused by________.

A．sand color

B．red pigments in coastal waters

C．blue pigment

D．reflected light and yellow pigment from plant life

对放射性射线敏感的人体组织有（）、生殖器官。

A.肌肉

B.指甲

C.骨髓

D.四肢