1.21针对（），中国共产党在1952年上半年发起了“五反”运动。

3.1.2Parents are encouraged to be role models for their kids because（）.

3.1.1To develop their artistic creativity, children should been encouraged to （）.

3.3.5What does the author say about straight，horizontal bars painted across roads?（）

3.3.4The American Automobile Association Foundation for Traffic Safety plans to （）.

3.3.3The advantage of chevrons over straight，horizontal bars is that the former ().

3.3.2On roads painted with chevrons, drivers tend to feel that （）.

3.1The passage mainly discusses （）.

3.2.5The last paragraph implies that the happiness of the little girl came from （）.

3.2.4The main purpose of this passage is to （）.

3.2.3The book entitled Thank You, Mr.FaIker is about （）.