【評論主題】【題組】52.What is recommended in the passage to deal with theft and damage concerns?(A) One can file a

【評論內容】Exchange sites recommend that swappers discuss such matters ahead of time. They may fill out an agreement spelling out who shoulders which responsibilities if a problem arises. It does not matter if the agreement would hold up in court, but it does give the exchangers a little satisfaction.

【評論主題】Ice sculpting is a difficult process. First, ice must be carefully selected so that it is suitable f

【評論內容】Ice sculpting is a difficult process. First, ice must be carefully selected so that it is suitable for sculpting. Its ideal material is pure, clean water with high clarity. It should also have the minimum amount of air bubbles. Perfectly clear ice blocks weighing 140 kg and measuring 100 cm × 50 cm × 25 cm are available from the Clinebell Company in Colorado. Much larger clear blocks are produced in Europe and Canada or harvested from a frozen river in Sweden. These large ice blocks are used for large ice sculpting events and for building ice hotels.

【評論主題】1.狂牛症是指牛的海綿樣腦病變，經由一種稱為普里昂（prion）的蛋白質所傳染，其潛伏期可能長達好幾年，但一旦發病，牛隻會在數個星期內死亡。下列何者是狂牛症病原體的成分？(A)脂肪酸(B)核糖核酸(C

【評論內容】Prion為蛋白質，由胺基酸組合而成