( ) Why do you like this study?
A:Because it's noisy.
B:Because it's quiet.
A,B是两个浸没在水中的小球,放手后,A球上浮,B球下沉,比较重力、浮力和物体密度,下面说法正确的是( )
1868年,我国烟叶出口量为737担,1894年增至113000担。这表明
Tom will be able to find the restaurant , he has a pretty good ______ of direction.