单项选择题A.Watches became less important because factories had clocks.B.Watches were of higher quality than ever before.C.More clocks were manufactured than watches.D.The availability of watches increased.
单项选择题A.A lesson requires students’ active involvement.B.Students usually take an active part in a lecture.C.More knowledge is covered in a lecture.D.There is a larger group of people interested in lessons.