根据我国的国情，必须坚持和发展（）战略指导方针，这是我国信息化战争的核心指导思想。
A.攻守兼备
B.攻防一体
C.积极防御
D.主动防御
参考答案：C
从Ⅱ栏中找出与Ⅰ栏相匹配的句子。
Ⅰ Ⅱ
小题1: Helen did badly in the math exam. A. We usually feel sad.
小题2: Wang Fang looks unhappy. B. I ask my teacher to help me.
小题3: I moved to this new city this year. C. I am a stranger.
小题4: I don’t know how to solve this problem. D. Her father is ill.
小题5: When something bad happens to us. E. She is upset.
发动机起动后，气压表读数达到（）kg/平方厘米后再进行起步行驶。
A、2.5；
B、3；
C、3.5；
D、4.5；
