【单选题】If you have made a decision, please stick ( ) what you want.
【单选题】I have promised to help you and I will ______ my word.
【判断题】肠道温度恒定,营养丰富,是微生物生长的良好环境
【单选题】—You an umbrella. Do you think we are going to have rain today? — . I use it as a walking stick.
C.
don’t have; I don’t think so.
D.
have; I don’t think so
【单选题】PN结半导体探测器通常采用哪种前置放大器?( )