某成熟植物细胞经某种处理后仍保持活性,但在0.3g/mL的蔗糖溶液中不发生质壁分离现象,实验操作正确。则先前的“某种处理”所用的试剂是( )
The online shop sells _____ shoes at a very good price.( )
child
child's
children
children's
Annie can play _____ piano very well.( )
a
an
the
/
The bridge near our school was built 1998.( )
up
of
in
Shanghai is a very city.( )
big
bigger
biggest
Not only Sam but also his parents coming to China soon.( )
is
are
were