A、 x=4,y=1
B、 {(4,1)}
C、 {4,1}
D、 (4,1)
答案:B
A、 x=4,y=1
B、 {(4,1)}
C、 {4,1}
D、 (4,1)
答案:B
A. 7
B. 8
C. 9
D. 10
A. heavy
B. hardly
C. heavily
D. strongly
A. 0个
B. 1个
C. 2个
D. 3个
A. good
B. better
C. best
D. the best
A. moves
B. moved
C. is moved
D. was moved
A. Two
B. The second
C. Five
D. The fifth
A. 某班所有高个子的学生
B. 所有的正整数
C. 相反数等于它自身的实数
D. 倒数等于它自身的实数
A. What
B. What a
C. What an
D. How
A. discussed
B. is discussing
C. was discussing
D. has discussed
A. 14
B. 21
C. 28
D. 35