与真核生物线粒体DNA复制有关的是（）。
A.Polγ
B.单链DNA结合蛋白
C.polα和po1δ
D.DNA连接酶
E.解链酶
参考答案：A
乳腺癌皮肤淋巴管癌栓阻塞时可出现（）
A.皮肤凹陷
B.橘皮征
C. * * 湿疹样改变
D. * * 凹陷
E.乳腺脓肿
Bungee jumping is an exciting activity, very popular among young adults, ________ courage matters
more than strength. [ ]
A. whose
B. that
C. of which
D. where
