关于创新和创业的关系，下列描述正确的是（）
A、创新贯穿创业始终
B、先有创新再有创业
C、先有创业再有创新
D、两者无关
参考答案：A
古代“山顶洞人”从事的生产活动中，发生化学变化的是 [ ]
A．采集野果
B．钻木取火
C．狩猎捕鱼
D．缝制衣服
Her father _______ in the USA for another year, so that she could work toward her master’s degree.
A．agreed her to stay
B．hoped her to stay
C．approved of her staying
D．let her staying
