按照《北京市房屋租赁合同（自行成交版）》有关转租的规定，除出租方和承租方另有约定外，

已知曲线y=ax³+bx²+cx+d满足下列条件：

①过原点；②在x=0处导数为-1；③在x=1处切线方程为y=4x-3．

（Ⅰ） 求实数a、b、c、d的值；

（Ⅱ）求函数y=ax³+bx²+cx+d的极值．

Paris is the capital of France. Its subway (地铁) is also very special. You can enjoy its culture when you are in this city. First you can see many people reading books in the subway. Whenever they are in the subway or at the station, there is always a book in the hand.

The subway station in Paris is not big, but each of them has its special acts. Some stations look like ships. Some stations have clothes, caps and shoes. And every station has a big advertisement picture. But many of them are for selling clothes and cosmetics (化妆品).

You can meet some beggars (乞丐) in the subway. But the beggars in the Pairs subway are also very special. They often play the violin or guitar in the train. They don't feel shy at all. Instead they think it is natural. After playing, they will go around the train and ask you to give them some money.

If you want to learn more about Paris, go to the subway and enjoy its culture by yourself.

小题1:Which city is the capital of France?

小题2:What do people usually do when they are in the subway?

小题3:Is the subway station very big in Paris?

小题4:What can you buy in some subway stations?

小题5:How do the beggars get money from people in the subway?

在从莫斯科飞往北京的飞机上，中国人甲与俄罗斯人乙发生争吵，情急之中，甲用饮料瓶将乙打成重伤，为及时救治，飞机就近在中国丙地机场降落后，将受害人送往医院。下列哪个法院对本案有管辖权

A．北京市中级人民法院

B．北京市基层人民法院

C．丙地基层人民法院

D．丙地中级人民法院

欲对某社区居民的健康状况进行调查研究，计划按居民的门牌号每隔5户抽1户，然后在选中的这户随机选择1名居民作为调查对象，这种选择方法为

A．单纯随机抽样+分层抽样

B．系统抽样+单纯随机抽样

C．系统抽样+整群抽样

D．整群抽样+系统抽样

E．分层抽样+整群抽样

肺大泡表现为（）

A.厚壁空洞

B.薄壁空洞

C.空洞壁厚伴有液平

D.不规则偏心空洞

E.虫蚀样空洞