Select the synonym of the following bold and underlined word in each sentence in the unit: 
Gradually more children were sent to the class as their parents realized that the young teacher was trying her best to help their poor kids.
A.Progressively   
B.Firstly   
C.Slowly 
D.Weakly

Choose the best answer to each of the following questions.
…………do you take a holiday? – Once a year.
A.When
B.How long
C.What time
D.How often

Choose the best answer to each of the following questions.
…………is this building? – It’s about two hundred years old.
 
A.How long
B.How far
C. How old
D. How

Choose the best answer A, B, C or D for each of the following sentences 
We ________ meet each other anymore.
A.frequently  
B. usually 
C. all the time 
D.rarely

Choose the word in each group that has the underlined part pronounced differently from the rest 

A.ready 
B.people  
C.three    
D.field

The students did not take to their lecturer.
A.The students did not understand what the lecturer said.
B.The new lecturer was unpopular with his students.
C.The new lecturer did not care his students.
D. The students did not follow the new lecturer.

According to the passage, when did sea level significantly rise?
A.in 1946
B.in the nineteenth century
C.some 8,000 to 11,000 years ago
D.80 million years ago

Which of the following is closest in meaning to the word “rubble”?
A.fragments 
B.mixture
C.columns
D.core

What does the passage say about the Arctic?
A.The first guyot was discovered there.
B.No guyots have ever been found there.
C.There are more guyots there than in any other ocean.
D.It is impossible that guyots were ever formed there.

What is the author’s main purpose in writing this passage?
A.To trace the career of Arnold Guyot.
B.To describe features of the undersea world.
C.To present the results of recent geologic research.
D.To discuss underwater ridges and volcanic chains.