BGO是我国研制的一种闪烁晶体材料,曾用于诺贝尔获得者丁肇中的实验。BGO是锗酸铋(化学式Bi4Ge3O12)的简称。已知BGO中的锗(Ge)化合价为+4价,则在BGO中铋(Bi)的化合价为
Nowadays,most people prefer to________ computer games rather than ___________ books.( )
play;reading
play;read
playing; reading
She is a teacher__ ________has much teaching experience.( )
whose
who
whom
I ___________this magazine for three months.( )
have bought
have had
have borrowed
Alice is __________one of the twins.( )
the taller
taller
tallest
Neither you nor he _________good at drawing.( )
are
is
be