⑴I'm hungry.____                       A. She's running.

⑵What are you doing?____       B. He's making noodles.

⑶What are they doing?____      C. I'm hungry, too.

⑷What is she doing?____          D. They are rowing a boat.

⑸What is Sam doing?____         E. I'm reading a book.

文艺能反映时代的特征。下列文艺作品属于抗战时期，文艺工作者创作的优秀文艺作品有（   ）

①《屈原》      

②《狂人日记》       

③《小二黑结婚》

④《黄河大合唱》

⑤《太阳照在桑干河上》

第五次实验中弹簧测力计的读数如图，为____牛。