One quarter of teachers in an American city said that children in kindergartens had no time for playing freely.
A: A
B: B
C: C
D: D
E: E
F: F
G: G
H: H
I: I
J: J
K: K
L: L
A: A
B: B
C: C
D: D
E: E
F: F
G: G
H: H
I: I
J: J
K: K
L: L
举一反三
- By playing with children, parents can prevent them from being harmed by stress. A: A B: B C: C D: D E: E F: F G: G H: H I: I J: J K: K L: L
- A quarter of this year’s American grain harvest will be used to produce bio-fuel for cars. 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
- 已知一棵二叉树的前序序列为：A，B，D，G，J，E，H，C，F，I，K，L；中序序列为：D，J，G，B，E，H，A，C，K，I，L，F。该二叉树的后序序列为（）。 A: J，H，F，B，G，D，K，L，I，F，C，A B: J，G，E，B，K，L，D，H，I，F，C，A C: J，G，D，H，E，B，K，L，I，F，C，A D: J，G，D，H，E，B，K，L，I，F，A，C
- Grown-ups are likely to think that learning to children is what medicine is to patients. A: A B: B C: C D: D E: E F: F G: G H: H I: I J: J K: K L: L
- The children of tomorrow will long for the time away from all electronic devices. 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