ENGLISH I - READING

In paragraph 1, what does the author say about the presence of a blowhole in cetaceans?

• It clearly indicates that cetaceans are mammals.

• It cannot conceal the fact that cetaceans are mammals.

• It is the main difference between cetaceans and land-dwelling mammals.

• It cannot yield clues about the origins of cetaceans.

Which of the following can be inferred from paragraph 1 about early sea otters?

• It is not difficult to imagine what they looked like.

• There were great numbers of them.

• They lived in the sea only.

• They did not leave many fossil remains.

The word “precious” in the passage is closest in meaning to

• Exact

• Scarce

• Valuable

• Initial

Pakicetus and modern cetaceans have similar

• hearing structures

• adaptations for diving

• skull shapes

• breeding locations

The word “it” in the passage refers to

• Pakicetus

• Fish

• Life

• ocean

The word “exposed” in the passage is closest in meaning to

• Explained

• Visible

• Identified

• Located

The hind leg of Basilosaurus was a significant find because it showed that Basilosaurus

• lived later than Ambulocetus natans

• lived at the same time as Pakicetus

• was able to swim well

• could not have walked on land

It can be inferred that Basilosaurus bred and gave birth in which of the following locations?

• On land

• Both on land and at sea

• In shallow water

• In a marine environment

Why does the author use the word "luckily" in mentioning that the Ambulocetus natans fossil included hind legs?

• Fossil legs of early whales are a rare find.

• The legs provided important information about the evolution of cetaceans.

• The discovery allowed scientists to reconstruct a complete skeleton of the whale.

• Until that time, only the front legs of early whales had been discovered.

The word “propulsion” in the passage is closest in meaning to

• Staying afloat

• Changing direction

• Decreasing weight

• Moving forward