如图所示,用餐巾纸摩擦一根可以绕支架自由转动的吸管,使它带上电,现用另一带电玻璃棒靠近吸管的一端,发现它们互相排斥,关于这一现象,下列说法正确的是( )
A:吸管带的是正电
B:吸管在摩擦中失去电子而带负电
C:吸管和玻璃棒带同种电荷
D:吸管和玻璃棒带异种电荷
胡萝卜的繁殖方式( )的。(多选)
在8:30分,这一时刻钟面上时针与分针的夹角是____度.
— How many ________ were on the bus when the accident happened?
— About forty. Seven of them were kids.