6.  Mathematics ________ the study or science of numbers.
A. is
B. are
C. was
D. were
      满分：4  分
7.  Their efforts to improve the production have been very _________, and they have been praised by the company for their contribution.
A. effective
B. efficient
C. effect
D. affective
      满分：4  分
8.  With his work completed, the manager stepped back to his seat, feeling pleased ________ he was a man of action.
A. which
B. that
C. what
D. whether
      满分：4  分
9.  I don’t know the park, but it’s ________ to be quite beautiful.
A. said
B. told
C. spoken
D. talked
      满分：4  分
10.  How much did you _____ all these things?
A. spend
B. cost
C. give
D. pay for
      满分：4  分
11.  I won’t make the ______ mistake next time.
A. like
B. same
C. near
D. different
      满分：4  分
12.  Measles ______ a long time to get over.
A. spend
B. spends
C. take
D. takes