【简答题】Read the passage. Write True or False for the statements. What do you know about St. Patrick’s Day? You might know that it’s a special Irish celebration which happens every March. But do you know why ...
【判断题】Task 6 Listen to the following summary and decide whether the following statements are true (T) or false (F). 1. Mr. Red invites Mr. Green to dinner. ( )
【单选题】Figure shows 3 electric charges labeled Q1, Q2, Q3, and some electric field lines in the region surrounding the charges. What are the signs of the 3 charges?