【单选题】About 787, the English began to be troubled by bands of ___ . At first , the Danes came only on plundering the country.Gradually, however, they came to make permanent settlements.
【简答题】11. Physics New words: rotate (v): to turn around on an axis atmosphere (n): the layers of air and other
gasses around a planet unlikely (adv): with a very low chance of
happening gradually (adv): slo...