与“秋月春风等闲度”一句中“等闲”意义相同的一项是( )。
A：等闲识得东风面
B：莫等闲，白了少年头
C：万水千山只等闲
D：等闲平地起波澜
—He, together with Tom, _____ going to visit Shanghai in July. How about you?
—I'm afraid I have to stay at home _______
下面不属于高新技术产业的主要特点是：
