中国地质大学工商企业管理（专）大学英语2(高起专)阶段性作业1 总分: 100分 考试时间:分钟 单选题1. We dont doubt Tacks _D_ to do the work.(5分)(A) able(B) capable(C) kind(D) ability参考答案：D2. _B_ different kinds of pianos, the workers improved their quality.(5分)(A) Being produced(B) Having produced(C) Produced(D) Producing参考答案：B3. The speaker raised his voice to make himself_A_.(5分)(A) heard(B) hear(C) hearing(D) to hear参考答案：A4. What are the _B_ reasons?(5分)(
