利用植物的茎尖、叶片、茎段、花药、花粉等，在无菌条件下，培养在玻璃器皿中人工配制的培养基上，使它发育成完整的植株。这种技术可以用来培育新品种，可以在较短时间内大量繁殖植物，还可以防止植物病毒的危害。下列关于这种技术的叙述正确的是（   ）
①这种技术利用了植物细胞的全能性   
②这种技术叫做组织培养，可以克隆生物体
③这种技术属于无性繁殖的方式       
④这种技术属于细胞工程的应用领域之一

下列说法正确的是(   )

利用小球藻培养液进行光合作用实验时发现在其中加入抑制暗反应的药物后，在同样的光照条件下释放氧气的速率下降。其主要原因是（   ）

如果执行程序框图，那么输出的S等于 （   ）

根据短文理解，从给出的A、B、C三个选项中选择最佳答案填空。

    All parents love their children. Many parents want their kids to1 well-known people when they2 . Most of them want their kids to live better than others. Many of them 3their kids will be singers or actors. Actors and singers can 4 money easily in our country. When they appear in the advertisement, they will get 5 money which a farmer or a worker can't make all his life. Some of the parents want their kids to be businessmen6doctors. If they work hard, they will have cars and big houses in several 7. Some parents want their kids to work in cities and towns. They don't 8 them to work in the countryside. People who work in the cities and towns can get money after they 9. If you are a famous man, especially an actor, you'll get much but pay a little. A farmer is 10 , he gets little but pays much.