温室效应
参考答案:
存在于大气中的某些痕量物质和存在于对流层中的臭氧具有吸收太阳能在近地表面的长波辐射从而使大气增温的作用。
The children were playing games on the playground, ________ school uniforms.
A.all of them wore
B.all wearing
C.all of whom wearing
D.all were wearing
患者,中年女性,因双手近端指间关节、掌指关节、腕关节肿痛伴僵硬半年,查血尿酸410mmol/L,X片示腕关节骨质疏松,可见个别关节间隙狭窄。
提问:该患者的X线片分期为()
A.Ⅰ期
B.Ⅱ期
C.Ⅲ期
D.Ⅳ期
E.Ⅴ期
F.Ⅵ期