缺铁性贫血的神经系统表现
A.智力及动作发育落后,有倒退现象B.兴奋、多动C.注意力不集中,记忆力减退D.腱反射减弱E.感觉异常
参考答案:C
以下物质:(1)甲烷(2)苯(3)聚乙烯(4)聚乙炔(5)2丁炔(6)环己烷(7)邻二甲苯(8)苯乙烯.既能使KMnO4酸性溶液褪色,又能使溴水因发生化学反应而褪色的是( )
A.(3)(4)(5)(8)
B.(4)(5)(7)(8)
C.(4)(5)(8)
D.(3)(4)(5)(7)(8)
_______ the school, he saw his parents ________ for him at the school gate.
A.At reaching; waited
B.On arriving; waiting
C.At arriving; waited
D.On reaching; waiting