火箭免疫电泳如结合放射自显影技术其灵敏度可提高（）
A.3～5倍
B.10倍
C.100倍
D.1000倍
E.10000倍
参考答案：D
The World Wide Web is sometimes jokingly called the World Wide Wait because it ______ be very slow.
A．should
B．must
C．would
D．can
G蛋白（Gprotein）全称GTP结合蛋白（GTP-bindingprotein）
