SUBTES LIT ING

1. What advantage did some land mammals gain by returning to the sea?

• Fewer predators exist in the sea

• More space is available in the sea

• There is a greater supply of food in the sea

• The climate is more hospitable in the sea

• There is a threat on the land for them

2. It can be inferred from the passage that during the last 150 years humans have …

• constructed submarines

• been protected by aquatic predators

• threatened the existence of whales and seals

• begun to harvest certain plants from the ocean as food

• trained seals to be more carnivorous mammals than before 

3. Based on the passage, what can be assumed about marine mammals?

• They will still exist as long as humans put a limit on consuming them

• They become high commodities because they are prehistoric animals

• They used to live side by side with ancient humans

• They will return to the land where they originally came from

• They would not be killed by predators if there were abundance of food in the sea

4. Which of the following statements best restates the last sentence of the passage?

• Humans find out that marine mammals are in danger because they do not breed often

• Sea mammals are far slower when breeding than other mammals, including human

• However, human insatiable desires almost make slow-to-breed sea mammals extinct

• Humans want to wipe all marine mammals to meet their needs

• But marine mammals can breed slowly in the sea even though humans hunt them for food

5. According to the passage, we can conclude that marine mammals … 

• have their origins on land

• have evolved successfully but are now threatened by humans

• compete with one another for the ocean's food supply

• have many of the biological traits of humans

• have been sources of abundant foods for carnivores

6. What is the passage mainly about?

• How children crawl, stand, and walk

• Explanation of why some children are slow to develop

• Early physical development in children related to nervous system

• The function of the corpus callosum for human development

• The comparison between psychological growth of children and adults

7. According to the passage, the corpus callosum is part of the human …

• muscular system

• digestive system

• circulatory system

• nervous system

• respiratory system

8. According to the passage, which of the following motor skills does an infant first develop?

• Moving the head

• Crawling

• Controlling the arms

• Kicking

• Brain Maturity

9. According to the passage, we can hypothesize that children's brain centers will control new muscles if …

• their brain matures

• children appear a new body movement

• their long nerve fibers disappear

• children perform an acquired skill more rapidly

• children have adequate sleep at night

10. The word ‘formed’ in sentence 1 means …

• waited

• born

• taken

• split

• developed