题目

My name is Rebecca. I am ________ American girl. Here is a photo ________ my family. There are three people in my family. The man ________ glasses is my father. His full name is James Allen Green. You can call him ________. Unlike Chinese, most English people have ________ names. One is their family name, the other two names are given names. Their family is ________ the given names. They use Mr., Mrs., or Miss with the ________ name, but they never use ________ with the first name. The woman standing next to my father is ________. She is kind to everyone. Oh, the girl in front of them is their不定项选择有一轻绳拴了一个物体，如图所示，在悬点O以加速度a向下做减速运动时，作用在物体上的各力做功的情况是A．重力做正功，拉力做负功，合外力做负功 B．重力做正功，拉力做负功，合外力做正功 C．重力做正功，拉力做正功，合外力做正功 D．重力做负功，拉力做负功，合外力做正功