读某区域略图,据图回答下列小题。

A={x|x²﹣3x+2=0}，B={x|ax﹣2=0}，若B⊆A，求a．

在人类的正常生殖过程中，受精作用和胚胎发育的场所分别是（　　）

适度的自尊有助于我们面对批评，改正错误；过度自尊则使我们过于敏感，体验不到生活的乐趣。这告诉我们，在生活、学习中（    ）

     Yesterday my sister and I went____(buy)something for her birthday．She didn't really know what____(get)but she seemed____(like)the idea of a pet，so we went to the nearest pet shop．She started ____(look)around at an the animals．The man in the shop advised her ____(choose)the rabbits，but when she saw some puppies(小狗) ____(play)in the box，she said she would like____(have)one of them．I didn't know if we had enough money____(buy)one and I hoped my mother would want us____(have)a dog in the house，but my sister promised____(look after)it well and we had enough money，so we bought a little brown dog.