GSM网话音测试的测试项目如下：市区CQT测试；市区DT测试；交通干线DT测；（）。
参考答案：行政村DT测试
One of the boys ________ doing __________ homework in the classroom.
A. is; their B. are; his C. is; his
票据法规定转让背书必须记载的事项有哪些？
