题目

Have you ever been to Thailand? For thousands of tourists from China, this small country in Southeast Asia is an excellent place to _________. Bangkok (曼谷) is the _________ of Thailand. There are many temples (寺庙) in Bangkok. You can _________ some monks (僧侣) walking along the streets.The _________ time to visit Thailand is from April 5h to 6th, because it is the time of _________. People sing, dance and go on the streets to ________ water at each other. The local people think that water can wash away bad things and bring good luck.On the one hand, beaches and sunshine are a lot of如图所示，空间中存在匀强电场，A、B、C、D、E、F、G、H为立方体的八个顶点，立方体的边长为2cm,现将一电荷量为10-8C的正电荷由A移到B,电场力做功3×10-10J,由A移到E电场力做功为0,另将电荷量为10-8C的负电荷由D移到A电场力做功3×10-10J,则下列关于电场强度的大小和方向说法正确的是（ ）A. N/C,由A指向CB. N/C,由D指向BC. N/C,由D指向BD. N/C,由C指向A