Cho vấn đề nghiên cứu: Việc làm thêm của sinh viên một trường đại học. Soạn thảo 8 câu hỏi đóng phức tạp dạng lựa chọn để trả lời cho vấn đề nghiên cứu đó.

37. pan shot – across the street down the row of houses 37. each is the same in general style, the front porch, the gliders, the rest of it. then suddenly the camera stops on the last house in the line. there's a spot light set up on the porch and even in the daylight we can see it shining. which element of drama is highlighted in this stage direction?

In which research method does a researcher change the value of one variable to determine how the change affects another variable? a. experiment b. observational research c. survey d. case study

What was different about warfare in the early 1800s and early 1900s?