【简答题】Before you listen, fill in the blanks in the questions about what information may be given in the recording. 1. ________ was it invented? 2. ________ was the transportation idea? 3. ________ invented ...
【单选题】GENETICALLY MODIFIED FOODS Are genetically modified crops an environmental dream come-true or a disaster in the making? Scientists are looking for answers. The world seems increasingly divided into th...
【简答题】You are going to hear a museum guide introduce three transportation ideas. Before you listen, fill in the blanks in the questions about what information may be given in the recording.