【单选题】He came back yesterday.
【简答题】I left when he came back.I______ ______ ______ he came back.
【简答题】What's in that box? My photos_____.
【单选题】一位学生有考试焦虑表现, 在接受治疗后,其症状得到减轻。治疗者所使用的治疗方 法是( )。
【简答题】二手资料调研的主要缺点有( )。 A.资料可能过时 B.准确性难于把握 C.目标不明确 D.浪费的时间 E.成本高昂
【简答题】It was lunch time. Mike was in the garden with Linda. Suddenly, two aliens (外星人) arrived! “Wow! Aliens!” They were so excited that they screamed loudly. “Hello, friends!” The two aliens came out from ...
【单选题】g -羟基酸易脱水,受热生成 ______。