单项选择题
Which of the following statements is not true（）
A．Some stamps have a flower or animal on one side. B．Along with a picture on one side, there are also some words. C．Some used stamps can be worth a lot of money. D．A stamp, when used, is worth more than a new one.
单项选择题 We may conclude that（）
单项选择题 Of all the oceans in the world, the Indian Ocean contains more than （）
单项选择题 The word “supply”in the third sentence means （）
