如图，在△ABC中，AB=AC，且点A的坐标为（﹣3，0），点C坐标为（0， $\sqrt{3}$ ），点B在y轴的负半轴上，抛物线y=﹣ $\frac{\sqrt{3}}{3}$ x²+bx+c经过点A和点C

⑴Did she go to school?____                        A. Of course.

⑵Where is Haikou?____                               B. We went there in June.

⑶What did Daming do yesterday?____       C. It's in the south of China.

⑷When did you go there?____                    D. He climbed the mountain.

⑸Can I make a kite?____                              E. Yes，she did.

法国拿破仑三世统治时期，全面、大幅度地降低商品进口关税，废除第一帝国以来的关税保护政策。1860年，法国还与英国签订一项白由贸易条约，消除了两国间的贸易壁垒。这些政策(    )