A、 (0,1)
B、 [0,1)
C、 (0,1]
D、 [0,1]
答案:B
A、 (0,1)
B、 [0,1)
C、 (0,1]
D、 [0,1]
答案:B
A. open
B. close
C. opened
D. closed
A. 4
B. 3
C. 2
D. 1
A. in style
B. in common
C. in need
D. /
A. thankful
B. more thankful
C. most thankful
D. less thankful
A. open
B. to open
C. opened
D. opening
A. careless
B. stupid
C. honest
D. humorous
A. turn up
B. give up
C. stay up
D. grow up
A. To;of
B. At;at
C. To;in
D. In;about
A. 19
B. 20
C. 21
D. 22
A. π
B. 2π
C. 4π
D. π/2