【简答题】What can you see in the ______________ [ ?ɡɑ:dn ]?
【简答题】Can you see a kite on the wall?
【单选题】The National Road is to connecting Potamac River and ___ River.
【单选题】— Can you play the guitar? — _________________.
【单选题】Seldom ______ her in the public.
【判断题】The Louisiana Purchase directly led to the construction of the National Road.
【单选题】The National Road was the first major improved highway funded by the ___ government
【判断题】磷酸二酯键连接第一个核苷酸的3’羟基与下一个核苷酸5’羟基形成二核苷酸。