【正文】 I worked on this particular farm Paragraph 2：Farms have bee even bigger business today. 答案精析語篇解讀　本文是記敘文，姐妹倆假借媽媽之名出售兌獎(jiǎng)券且企圖將所得據(jù)為己有。and173。year173。needed girls would acpany her，selling tickets with great father made and donated beautiful wooden toys，jewellery boxes and other lovely items as prizes.Now my sister was always ing up with “good ideas”，most of which didn’t work out to that didn’t deter had many just waiting to be she was eight and I was just five，we had a wonderful idea for a business decided we would sell raffle tickets for charity，and that charity was us!So one afternoon，we told our mother we were going to play in the park with our cousins as we did most days after instead，we walked around the streets armed with a raffle book，a pen and a large cloth bag to carry the money.We’d acpanied our mother many times when she sold tickets，so people were familiar with us when we appeared at their the blank looks they received when asking about the prizes on offer，they were very there were no actual prizes，our mother’s previous track record enabled us to sell nearly the whole book of raffle tickets.Like a little pair of lottery(彩票) winners，we walked home and proudly showed off our our enjoyment of this sudden wealth was short173。black with a bright yellow ring around their head and back，which may be broken or joined to form a figure a fingerprint，the pattern is unique to each frog.Predators generally learn that such brightly colored frogs are poisonous and tend to avoid this doesn’t always predators ignore the warning，while some birds and snakes seem to be able to eat poisonous frogs with few ill effects.So researchers wondered whether these poison frogs have another way of protecting themselves—camouflage(保護(hù)色)．To find out，they first tested putational models of predator vision on pictures of the results suggested that although the frogs are obvious at close range，their colors and patterns blend(融合) with the rainforest background as viewing distance increases.To test those results，they placed model frogs on different backgrounds in a rainforest to see how wild predators attacked the frogs more often when they were placed atop(在……的頂上) a picture of plain soil or a colored paper square，but less often when they were on the actual rainforest floor.And humans seem to fall for the trick，too：People who saw pictures of frogs in the rainforest took longer to spot the real frogs at a distance than a frog that had been altered(使變樣) so that it didn’t have the same colors and ，this suggests that although these poison frogs are highly visible at close range，from far away their colors blend together for the perfect rainforest researchers consider that the frog’s pattern is made up of a specific distribution of colors to give it the best of both worlds.25．What does the new study about poison tree frogs focus on?A．How their predators catch them.B．How their bright colors protect them.C．What their bright colors are.D．What their predators are.26．What does the author intend to do in Paragraph 2?A．Summarize the previous paragraph.B．Use examples to support the topic.C．Add some background information.D．Introduce a new topic for discussion.27．What can be learnt about the results achieved by the researchers?A．They confirmed their ass