A、 {x|1<x<5}
B、 {x|x>5或x<1}
C、 {x|1≤x≤5}
D、 {x|x≥5或x<1}
答案:C
A、 {x|1<x<5}
B、 {x|x>5或x<1}
C、 {x|1≤x≤5}
D、 {x|x≥5或x<1}
答案:C
A. a
B. an
C. the
D. /
A. When
B. Where
C. How
D. Which
A. discussed
B. is discussing
C. was discussing
D. has discussed
A. 0
B. 1
C. -1
D. 不存在
A. repeat
B. forget
C. receive
D. join
A. What
B. What a
C. What an
D. How
A. without
B. under
C. with
D. for
A. encourage
B. are encouraging
C. are encouraged
D. were encouraged
A. were washing
B. had washed
C. was washing
D. washed
A. 0.5
B. -1
C. -0.5
D. 1