单项选择题
What does the name of Heathcliff mean? A、heath on the cliff B、their love is one inseparable body C、 both A and B
判断题 BAD is an abbreviation for the words of brevity, accuracy and dependence.
判断题 公称直径既不是管子内径，也不是管子外径，但同一公称直径的管子其外径一定相等。（ ）
单项选择题 3. What did pub in the UK not come from? A、Ale house. B、Inn. C、Tavern. D、Roman Hotel.
