A、 was
B、 were
C、 is
D、 are
答案:D
A、 was
B、 were
C、 is
D、 are
答案:D
A. many
B. enough
C. few
D. little
A. big
B. old
C. small
D. cheap
A. π
B. 2π
C. π/2
D. π/4
A. 0
B. 1
C. -1
D. 不存在
A. 6
B. 8
C. 10
D. 12
A. many cheaper and quicker
B. very cheaper and quicker
C. more cheaper and quicker
D. much cheaper and quicker
A. it
B. them
C. him
D. her
A. so
B. very
C. too
D. much
A. 15
B. 16
C. 14
D. 13
A. 4x-5
B. 2x-8
C. 2x-3
D. 2x-4