It has been documented that, almost twelve million years ago at the beginning of the Pliocene Age, a horse, about midway through its evolutionary development, crossed a land bridge where the Bering Straits are now located, from Alaska into the grasslands of Europe. The horse was the hipparion, about the size of a modem-day pony with three toes and specialized cheek teeth for grazing. In Europe the hipparion encountered another less advanced horse called the anchitheres, which had previously invaded Europe by the same route, probably during the Miocene Period. Less developed and smaller than the hipparion, the anchitheres was completely replaced by it. By the end of the Pleistocene Age both the anchitheres and the hipparion had become extinct in North America, where they had originated. In Europe they had evolved into an animal very similar to the horse as we know it today. It was the descendant of this horse that was brought by the European colonists to the America.
1) Both the hipparion and the anchitheres
(A) were the size of a modern pony
(B) were native to North America
(C) migrated to Europe in the Pliocene Period
(D) had unspecialized teeth
2) According to this passage, the hipparions were
(A) five-toed animals
(B) not as highly developed as the anchitheres
(C) larger than the anchitheres
(D) about the size of a small dog
3) The author suggests that the hipparion and the anchitheres migrated to Europe
(A) by means of a land route which is now nonexistent
(B) on the ships of European colonists
(C) because of a very cold climate in North America
(D) during the Miocene Period
4) This passage is mainly about
(A) the evolution of the horse
(B) the migration of horses
(C) the modern day pony
(D) the replacement of the anchitheres by the hipparion
5) It can be concluded from this passage that the
(A) Pliocene Period was prior to the Miocene
(B) Pleistocene Period was prior to the Miocene
(C) Pleistocene Period was prior to the Pliocene
(D) Miocene Period was prior to the Pliocene