小林在研究电功率P和电阻R的关系时，通过测量得到下表的实验数据，请根据表中的数据归纳出电功率P和电阻R的关系：P =____。

下列各句中，没有使用借代修辞手法的一句是（  ）

改错题。句子中有一处是有错误的，把它找出来并改正。

①There are many people are playing basketball there.____ 
②Could you tell me the different between the two books.____ 
③It was my grandpa's eighty birthday yesterday._____ 
④Bady,it's very lazy for you to sleep late every morning.____ 
⑤I wrote an 800-word's composition yesterday.____ 
⑥The fish we caught is still living.____ 
⑦The Great Wall is one of the most famous building all over the world.____ 
⑧If Tom will study hard this term,he will catch up with his classmates.____ 

下列说法中正确的是（   ）

阅读短文，回答问题。
    Rose's summer holiday is coming soon. Her family loves to go on trips in summer. Last summer, she went to a lake with her parents. She swam in the lake and played on the beach.
    This summer she will go on a trip to the sea with her grandfather and grandmother. She will swim in the sea. She will watch the ships on the sea. She will be happy for the summer holiday.