Why does the author mention “gunpowder”?




A.To illustrate the negative aspects of some industrial processes
B.To give an example of a product made with wood compounds
C.To remind reader that the Colonial era ended in warfare
D.To suggest that wood was not the only important product of the Colonies

According to the passage, by the end of the Colonial period, the price of wood in eastern cities .




A.rose quickly because wood was becoming so scarce
B.was much higher than it was in Britain
C.was slightly higher than in previous years
D.decreased rapidly because of lower demand for wood

Population growth rates vary among regions and even among countries within the same region.




A.restrain
B.stay unchanged
C.remain unstable
D.fluctuate

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closet in meaning to each of the following questions.
He delayed writing the book until he had done a lot of research.




A.Only after he had done a lot of research did he begin to write the book.
B.He did a lot of research after he finished writing the book.
C.He delayed writing the book as he had hardly done any research.
D.It was only when he had written the book that he did a lot of research.

The Central Intelligent Agency( CIA) _________ came about as a result of the National Security Act of 1947.




A.what
B.it was
C.was what
D.it was what

They 've made up their mind for ______ excursion participated by the whole class next month.




A.a two-week
B.two-weeks
C.two weeks'
D.a two-week's

The Mayflower was bound for Virginia, but a hurricane _________ off the course.




A.blew it
B.to blow it
C.it blew
D.blowing it

Out _______ from its tiny cage.




A.does the bird fly
B.fly the bird
C.did the bird fly
D.flew the bird

The new political system didn't ______ the public's expectations.




A.catch up with
B.bring about
C.come across
D.come up to

_________ greyhound, can achieve speeds of up to thirty-six miles per hour.




A.The
B.The fastest
C.The fastest dog
D.The fastest dog, the