【C2】A．burningB．burntC．collapsingD．fallen

若两个电容C1＞C2串联，则总电容为（)。A.C1＋C2B.C1－C2C.C1×C2／（C1＋C2)D.（C1＋C2)／（C1×C2)

What should one do if he/she finds the fallen space junk on the Earth？A．Leaving it where i

How many centimeters of rain have fallen within a day during the heavy rain？A．10.B．24.C．28

The exchange______of the pound has fallen against the dollar.A．rateB．floatC．currencyD．amou

There are nations whose lack of contact with the outside world has______ poverty.A.fallen

Night() fallen the girl studying in her room switched on the light to do more reading.