【单选题】
I particularly want to pay tribute, not only to those who prepared the magnificent dinner, but also to those who have provided the splendid music.
【单选题】
What role does a teacher play in the following activity? The teacher writes one of five numbers (1-5) on a number of cards (the same number as the students). Each student draws one card. Those who have drawn number 1 will form group1, and those who have drawn number 2 will form group 2. Thus the students are put into five groups in a random way.