28．The Chinese people are looking forward to the first attempt     on the moon after Yang Liavei’s successful trip into space.

A．landing

B．landed

C．land

D．to land

确诊乳腺包块性质最可靠的方法是

A． * * 钼靶X线检查

B． * * 溢液涂片

C． * * 触诊

D．活组织病理检查

E．B超