【判断题】由于振动能级受分子中其他振动的影响,因此红外光谱中出现振动偶合谱带。( )
【简答题】Task 1 Leo is calling for the information about computers. Listen to the conversation and fill in the blanks with what you hear. U4 Listening T1.mp3: 1.The conversation is most probably taking place b...
【判断题】Listen to a short conversation, and then look at the statements below. Write a "T" in front of a true statement and an "F" in front of a false one according to the recording. The conversation will be ...
【单选题】从生物学意义上说,人区别于动物的一个标志是( )。
【判断题】Listen to a short conversation, and then look at the statements below. Write a "T" in front of a true statement and an "F" in front of a false one according to the recording. The conversation will be ...
【单选题】从生物学意义上说,()是作为人区别于动物的一个重要标志。