【简答题】Cloze. The British love to think of themselves as polite, and everyone knows how fond they are of their 'pleases' and 'thank you'. Even the st business such as buying a train ticket requires 1 s...
【单选题】As he collected fossils from strata throughout England, Smith began to see that the fossils told a different story from the rocks. Particularly in the younger strata, the rocks were often so similar t...