A．waterB．sun creamC．insect repellentD．cycling capesAcco……

单项选择题It can be inferred that by the eleventh century the Byzantine military forces ______.

问答题Etiquette to a society is what apparel is to the individual. Without apparel men would go in shameful nudity which would surely lead to the corruption of moral; and etiquette society would be in a pitiable state and the necessary intercourse between its members would be interfered with by needless offences and troubles. If society were a train, the etiquette would be the rails along which only the train could rumble forth; if society were a state coach, the etiquette would be the wheels and axis on which only the coach could roll forward. The lack of proprieties would make the most intimate friends turn m be the most decided enemies and the friendly or allied countries declare war against each other. We can find many examples in the history of mankind. Therefore I advise you to stand on ceremony before anyone else and to take pains not to do anything against etiquette lest you give offences or make enemies.

单项选择题The two conversations quoted here imply that ______.

填空题discontent—content

单项选择题The discovery of a new type of ceratopsian dinosaur suggests ceratopsians ______.