题目

阅读短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。 BELJLNG—Eatingat a Beijing restaurant is usually an adventure for foreigners, and particularlywhen they get the chance to order chicken without sex life or redburned lion head. Sometimesexcited but mostly confused, embarrassed or even terrified, many foreigners havelong complained about mistranslations of Chinese dishes. And their complaints areoften valid, but such an experience at Beijing's restaurants will apparently soonbe history. Foreignvisitors will no longer, hopefully, be confused by oddly worded r17．脱式计算（能简算的要简算）（$\frac{1}{7}$+$\frac{1}{8}$）÷$\frac{1}{56}$　　    $\frac{2}{15}$÷$\frac{3}{5}$+$\frac{3}{4}$×$\frac{4}{21}$    　$\frac{3}{5}$+$\frac{3}{5}$×19．