A、 needn't
B、 can't
C、 shouldn't
D、 mustn't
答案:A
A、 needn't
B、 can't
C、 shouldn't
D、 mustn't
答案:A
A. Two
B. The second
C. Five
D. The fifth
A. moves
B. moved
C. is moved
D. was moved
A. quite
B. too
C. very
D. so
A. f(-4)<f(-2)<f(-1)
B. f(-2)<f(-1)<f(-4)
C. f(-2)<f(-4)<f(-1)
D. f(-1)<f(-2)<f(-4)
A. π
B. 2π
C. π/2
D. π/4
A. repeat
B. forget
C. receive
D. join
A. 6
B. 7
C. 8
D. 9
A. his
B. her
C. their
D. your
A. How often
B. How long
C. How many
D. How much
A. how they are playing
B. what they are doing
C. where they are going
D. why they are practicing