【单选题】Scientific research has revealed that throughout the animal world, communication is just as important as it is to human beings. Countless animals lack the【C1】______for human speech, yet they employ en...
【简答题】请在资料一栏找到音频4-3-4,收听并完成下面练习 SECTION 4 Questions 31-40 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace> Questions 31-34 Choose the correct letter, A, B or C. Trying to respect succ...