题目

听下面一段较长对话，回答以下小题。【1】What does the woman do?A. A chemist. B. A train driver. C. A nurse.【2】What does the woman think of her work?A. Dangerous. B. Rewarding. C. Demanding. 答案：【答案】【1】 C 【2】 B 【解析】此题为听力题，解析略。【1】此题为听力题，解析略。【2】此题为听力题，解析略。5000克=______千克12千克=______克9吨=______千克54t=______kg ______kg=30000g40kg=______g300g+700g=______kg2400kg+600kg=______t3400g-400g=______kg2t-1400kg=______．