提插补泻，其手法主要是通过提插幅度的大小、频率的快慢、用力的轻重、操作时间的长短等来

Jenny Gonzalez is excited to go to school these days. The 13-year-old from South Gate Middle School in Los Angeles, US, is taking care of three green abalones(鲍鱼)at school.

The students of Violeta Llamas’ science class, including Jenny, have cared  for the sea animals since January. The class formed eight t 小题1: ．Each team takes turns to care for the abalones．Team five—Jenny, Alexis Diaz, Jennifer Gonzalez and Ricardo Beltran—have now got their t 小题2:．

The abalones are k 小题3: in a box of seawater. Every day Alexis, 12, checks if the water has too much salt．Too much salt is b 小题4:  for the health of abalones．Jenny makes fresh saltwater．

Then the four students work together to clean u小题5: the waste in the box and feed the abalones．

“Sea life is l小题6: a baby. You have to clean them and care for them. ”Jennifer said.

Nancy Caruso, a scientist, leads the project. She said the number of green abalones along the state’s coast is going down because people have c 小题7: too many of them．She said p 小题8: the sea is now the duty of the next generation(一代人)—young students．

“The students love taking care of the abalones.” said Llamas．

“This could open the door for those who want to be a sea life scientist o 小题9: an environment protector” she said.

The s小题10: time with the abalones will end this school year. Caruso and a team of volunteers will record the abalones and then send them into the sea．

股票是（）

A、可以随时抽回投资的凭证

B、投资入股和按期取得股息收入的凭证

C、取得一般贷款利息的凭证

D、不能买卖的无价证券

新生儿、婴幼儿使用具有氧化作用的药物可致

A．胆红素脑病
B．脑炎
C．胃溃疡
D．高铁血红蛋白症
E．佝偻病

最简单的交换排序方法是______。

谈谈民族文学与世界文学的相互关系。