填空题David Vaughan’s group found that most of the glaciers along the Peninsula were in retreat.
填空题A vegetable crop expert advised ______ (将这些蔬菜放置在可以接受八到十小时日晒的地方) a day.
单项选择题When you enter the bookshop to find a book, you will ______.
单项选择题The author contrasts the 1930s with the present in order to show that ______.
单项选择题A.Paper plates are cheaper than dishes.B.Dishes break more easily than paper plates.C.There is no need to wash any dishes now.D.The woman’s roommate will return soon.