Which of the following best describes the word 'sap'(line 3, para. 4)?

未分类题According to the author, the key of understanding economics is______.A．paradigmB．conformityC．methodological approachD．pragmatism

未分类题Which of the following can best summarize the main idea of this text?A．The beer in the best-shaped glass tastes best.B．What sort of glass can affect the speed of drinking.C．The shape and the contents of a glass matter.D．Angela Attwood offers us a research about glasses.

未分类题What can be inferred from Paragraph 4?A．The volunteers spent less time in drinking beer out of a jug.B．Whether a glass was full or half-full makes no difference to drinking speed.C．It took the volunteer five minutes to drink wine out of a straight glass.D．If a glass was full of lemonade, its shape matters.

未分类题According to the first two paragraphs, which of the following is true?A．Beer drinkers also care about the shape and angle when opening a boiled egg.B．People prefer to use a glass with a handle when drinking beer.C．It is hard for jug lovers and their fellow-drinkers to collect jugs.D．Straight glasses are popular in recent years.

未分类题Judging from the context, the word 'stack'(Para. 2)most probably means______.A．pileB．storeC．cleanD．preserve