对诊断系统性红斑狼疮(SLE)敏感性最高的自身抗体是()
A.抗Sm抗体
B.抗ds-DNA抗体
C.ANA
D.抗SSA抗体
E.抗Jo-1抗体
参考答案:C
Hardly Mike picked up the ball when another player took it form him.
A.have
B.has
C.had
D.have been
下列运算正确的是[ ]
A.3a+2a=a5
B.a2.a3=a6
C.(a+b)(a-b)=a2-b2
D.(a+b)2=a2+b2