Online services are so designed that the more they are used, the more profit they generate.
A: A
B: B
C: C
D: D
E: E
F: F
G: G
H: H
I: I
J: J
K: K
L: L
M: M
N: N
O: O
A: A
B: B
C: C
D: D
E: E
F: F
G: G
H: H
I: I
J: J
K: K
L: L
M: M
N: N
O: O
举一反三
- Paperbacks of popular literature are more likely to be replaced by e-books. A: A B: B C: C D: D E: E F: F G: G H: H I: I J: J K: K L: L M: M N: N O: O
- The radio business has changed greatly and now attracts more listeners. A: A B: B C: C D: D E: E F: F G: G H: H I: I J: J K: K L: L M: M N: N O: O
- When their native language is used, parents can become more involved in their children's education. A: A B: B C: C D: D E: E F: F G: G H: H I: I J: J K: K L: L M: M N: N O: O P: P
- The popularity of online courses may eliminate many teaching jobs. A: A B: B C: C D: D E: E F: F G: G H: H I: I J: J K: K L: L M: M N: N O: O
- 以下选项_____不是下图的宽度优先遍历序列。[img=1398x805]180308a9a445f86.png[/img] A: A,B,D,C,E,K,F,J,H,I,G,O,L,M,N B: A,B,D,C,E,K,F,J,G,H,I,M,L,N,O C: A,B,D,C,E,K,F,J,G,H,I,L,M,N,O D: A,D,B,C,E,K,F,J,G,H,I,M,L,N,O