器法检查尿液有形成分的优点不包括（）。
A.特异性高
B.灵敏度较高
C.速度快
D.效率高
E.重复性好
参考答案：A
Great changes have taken place in that school. It is no longer _______ it was 20 years ago, _______ it was so poorly equipped.
A．what; when
B．that; which
C．what; which
D．which; that
