A、 Short, tiring, and often dangerous.
B、 Long, tiring but not dangerous.
C、 Short but dangerous.
D、 Long, weary and often dangerous.

【正确答案】 D

【答案解析】解析：细节辨认题。短文第二段指出Their journeys were long，tiring，and often dangerous．由此可知原始人类的旅行路途遥远，使人疲惫而且非常危险。故选D。

A、 For pleasure and excitement.
B、 For new places where their herds could feed.
C、 For animals.
D、 For tree trunks.

【正确答案】 A

【答案解析】解析：信息明示题。根据短文第四段第一句Later they traveled, not for necessity, but for the joy and excitement of seeing and experiencing new things．可知后来人们旅行是为了快乐，为了感受新鲜事物。所以选A。

A、 Bicycles, cars, trains, and ships.
B、 Bicycles, cars, trains, and planes.
C、 Cars, trains, ships, and planes.
D、 Ferries, cars, trains, and planes.

【正确答案】 C

【答案解析】解析：细节辨认题。短文最后一段提到的现代交通工具有：cars and splendid roads，express trains，huge ships and jet airliners，所以选项C正确。