竖直放置的一对平行金属板的左极板上用绝缘线悬挂了一个带正电的小球,将平行金属板按图所示的电路图连接,绝缘线与左极板的夹角为θ,当滑动变阻器R的滑片在a位置时,电流表的读数为I1,夹角为θ1;当滑片在b位置时,电流表的读数为I2,夹角为θ2,则( )
Frederick_____entered the final competition last month. His hobby has brought him_____.( )
successful; success
successful; successfully
successfully; success
successfully; successful
It is wise____Linda to make up her mind____to play an instrument.( )
for;learning
for;to learn
of; learning
of; to learn
The shop in Wanda Square _______ for six years,but I ______ there so far.( )
has opened; haven't gone
has been open; haven't been
has been open; haven't gone
has been opened; haven't been
﹣He is planning to walk on the wings of a flying plane.
﹣What?I have never heard of idea before.( )
a crazier
the crazier
a craziest
the craziest
﹣Will you do any cleaning in the park this Sunday?
﹣______!I do so every Sunday.( )
Nice work
No shouting
You bet
In with a chance