________(45)




A.convenient
B.free
C.applicable
D.available

________(40)




A.handling
B.controlling
C.doing
D.playing

A.leaves
B.brings
C.looks
D.plays

Since we ____________ to working so hard, can we rest for a while?.




A.don’t used
B.aren’t used
C.don’t use
D.not use

Today many species of plant and animal are in ________ of extinction.




A.danger
B.endangered
C.endanger
D.dangerous

__________(56)




A.over
B.again
C.repeatedly
D.repeating

__________(51)




A.it
B.them
C.that
D.those

You can ask the interviewer about______________




A.the salary, position and duties
B.the salary, position and his age
C.the salary and the interviewer's education
D.the salary, the interviewer's family and his duties

Why were the telephone, radio, and television invented?




A.Because people were unable to understand signs, signals, and symbols.
B.Because people wanted to communicate across long distances.
C.Because people believed that signs, signals, and symbols were obsolete.
D.Because people wanted new forms of communication.

According to the passage, all of the following were true of railroads in the United States in the nineteenth century EXCEPT that




A.they connected important industrial cities
B.they were necessary to the industrialization process
C.they were expanded in a short time
D.they used relatively small quantities of natural resources