—How can I learn English well? —You will learn it well ________ you practice speaking it often.
A:unless
B:as for
C:as soon as
D:as long as
如图是“测量小灯泡电阻”的实验电路,有关该实验的以下说法正确的是( )
右图可以折叠成的几何体是()
如图,△ABC中,AB=AC,∠A=36°,BD平分∠ABC.求证: BCAB=5-12.