A.chamber
B.ancient
C.danger
D.ancestor

When did Motorola introduce the first cell phones for commercial use?




A.in the same years when he first made a cell- phone call
B.in 1981
C.in 1983
D.in the same year when AT& T constructed a cell phone system.

The phrase "these years" in the passage refers to ___________ .




A.the early 1800s
B.1850-1900
C.the present
D.the 1990s

Mark the letter A, B , C or D on your answer sheet to show the underlined part that needs correction in each of the following questions.
They are known that colds can be avoided by eating the right kind of food and taking exercise regularly.




A.They are known
B.be avoided by
C.right
D.regularly

After Louie had written his composition, he handed it to his teacher.




A.Handed the composition to his teacher, Louie wrote it.
B.Having written his composition, Louie handed it to his teacher.
C.Writing the composition, Louie handed it to his teacher.
D.Handing the composition, Louie had written his composition.

Jenny denied breaking the window.




A.Jenny was determined not to break the window.
B.Jenny said that she hadn’t broken the window.
C.Jenny didn’t break the window.
D.Jenny refused to break the window.

With what subject is this passage mainly concerned?




A.Economics
B.Geography
C.Finance
D.Culture

Many of the habitats of birds and plants have been destroyed by man's pollution.




A.nests
B.forests
C.natural homes
D.grounds

The bigger the supermarket is, _______________ .




A.the wider the choice is
B.the wider the choice it is
C.the more the choice is wide
D.the more the choice is

Jane has a computer.___________ , she doesn’t use it.




A.But
B.Therefore
C.so
D.However