在盒子中摸球，如果摸到一个黑球，那么(   )的说法是正确的。

给字加上偏旁组成新字，再组词。

发____   ____   次____   ____    台____    ____

委____   ____   乔____   ____    甫____    ____

如图，在平行四边形ABCD中，BE、CE分别平分∠ABC、∠BCD，E在AD上，BE=12cm，CE=5cm，求平行四边形ABCD的周长．

A

    On a very sunny afternoon this summer, Laura was driving home. When she was near a crossing, Laura found one of the traffic lights didn't work. And a policeman was standing in the middle of the crossing. There were too many cars. And the weather was too hot. The fact was that he was doing a hard job. He was busying directing(指挥) traffic.

    Laura saw a store on the corner. She wanted to buy some water for the policeman. But it was a little shy of her to do it for a stranger. At last Laura decided to go to the store to buy some water. After buying water, she found it was not easy to give the water to the policeman in the busy crossing.

    But Laura still wanted to have a try. She drove into the crossing and gave him the water. Though he was too busy to take the water, he broke into a smile and said, "Thank you."

    Laura went home by car and felt better. It felt good to spread the positive energy(正能量), and it was the least she could do.

根据短文内容，判断下列句子正误。

如图所示当电压一定时，通过导体的电流随导体电阻变化规律的图像。由图像可知，
当导体电阻为6Ω时，该导体消耗的电功率为____ W。