74.（ ）

(单选题)What does the author try to prove by giving the example of d (单选题)Why can’t the northern half of the earth escape for long? (单选题)When the first piece hits the South Atlantic, it causes ____ (单选题)What is mainly described in the passage? (单选题)What can be inferred from the last paragraph? (单选题)Which of the following statements is TURE according to what (单选题)What does the passage mainly tell us? (单选题)What can we know from the passage? (单选题)When people suffer from Alzheimer’s disease, ______. (单选题)What can be inferred about the gray-haired lady?