不需抗体参与即可杀伤靶细胞的是
A．T细胞B．B细胞C．NK细胞D．K细胞E．树突状细胞(DC)
参考答案：C
In the last few years thousands of films all over the word.
A .have produced B. have been produced
C. are producing D. are being produced
摘除白内障后在眼内植入IOL，IOL为无晶体眼屈光矫正的最好方法，下列哪项不是其优点
A．周边视野受限
B．具有双眼单视和立体视
C．无环形暗点
D．后房型IOL仅使物象放大1％～2％，即影像真实
E．术后可迅速恢复视力
