【简答题】用括号中所给单词的正确形式填空。 1. We are looking forward to _____ (hear) from you soon. 2. Huang Jiguang and Dong Cunrui are _____ (hero) in China. 3. Reader is a popular _____ (month) magazine here. 4. Mark Twain ...
【简答题】Use the statement and figure below to answer the next two questions (5 and 6). The accompanying figure shows a frictionless channel in the shape of a segment of a circle with its center at O. The chan...