In the nineteenth century, many stories created by novelists would come to an end with a series of coincidences, most of which were not likely to happen.（改写同义句）

In the nineteenth century, a novelist would bring his story to a c____ by presenting his readers with a series of coincidences-most of them wildly improbable.

根据下列函数图像理解正确的是
 
①该商品的互补商品需求量一定有所减少 
②生产者可能会扩大该商品生产 
③该商品的替代商品需求量会有所减少 
④该商品一定处于卖方市场

七选五

A. running away is anything B. they often find them in risky situations C. it may be natural D. these kids are more easy to get affected(感染) E. no one cares about them F. you probably imagine

    When you think about running away,  ____ that there will be no more rules, no parent to tell you what to do, no more fights. Sounds great and exciting, right? In fact,____ but fun. Kids who run away face new problems like not having any money, food to eat, a safe place to sleep, or anyone to take care of them.
    People with no home and no money become ready to do anything just to meet their everyday needs. Because of this,____ that would be terrible even for adults. Runaway kids join in dangerous crimes(犯罪) much more often than kids who live at home.
    Kids who live on the streets often have to steal(偷) for a living. Many take drugs to get through the day because they become so sad and feel that____. Some are forced(被迫) to do things they wouldn't normally do to make money. The number of kids with HIV or AIDS and other diseases is higher on streets, too, because  ____. This problem is attracting more and more attention.

我能把字写漂亮。根据拼音写汉字。

tān tú	bié shù	fán zhí
____	____	____

如果a=2+$\sqrt{3}$，b=$\frac{1}{2-\sqrt{3}}$那么（　　）