12. Why does the author use the word Iuckily in mentioning that the Ambulocetus natans fossil included hind legs?
(A) Fossil legs of early whales are a rare find.
(B) The legs provided important information about the evolution of cetaceans.
(C) I he discovery allowed scientists to reconstruct a complete skeleton of the whale.

8. The word it in the passage refers to (A) Pakicetus(B)Fish(C) Life(D)ocean

9. The word exposed in the passage is closest in meaning to (A) Explained (B) Visible(C)Identified (D) Located

10. The hind leg of Basilosaurus was a significant find because it showed that Basilosaurus (A) Lived later than Ambulocetus natans (B) Lived at the same time as Pakicetus (C) Was able to swim well (D) Could not have walked on land

11. It can be inferred that Basilosaurus bred and gave birth in which of the following locations (A) On land (B) Both on land and at sea (C) In shallow water (D) In a marine environment

13.Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? (A) Even though Ambulocetus swam by moving its bodv up and down. it did not have a backhonp (B) The backbone of Ambulocetus, which allowed it to swim, provides evidence of its missing fluke. (C) Although Ambulocetus had no fluke, its backbone structure shows that it swam like modern whales.

14. The word propulsion in the udssd ge is clusest in meaning to (A)staying afloat(2Changindiectio3)eceasin weight(D)Moving forward

15. Look at the four squares[■ ] that indicate where the following sentence can be added to the passage. "This is a question that has puzzled scientists for ages." Where would the sentence best fit? (A)1(B)2(C)3(D)4

1. Those who know Larry quite well are extremely shocked by his _____ remarks as he is usually gentle and moderate. (A) brindled (B) astringent (C) cathartic (D) dexterous

2. The lack of financial support and the shortage of workforce have _____ the process of the project. (A) encumbered (B) flaunted (C) germinated (D) harangued

3. There is no wonder that Greg is considered _____ since he always messes up tasks assigned, even those easy ones. (A) jocose (B) limpid (C) mellifluous (D) imbecile