—Before he went on the stage，he took a deep ______ ．

    —He was too nervous．

张倩在课本中发现了同班同学李涛写给她的纸条，说他很喜欢她，希望周末放学后在操场见面。纸条中还特别用红笔写了一句：“I LOVE YOU”。收到纸条后，张倩的正确做法是（    ）

Zhao Yan: Look at this photo, Wang Ying.

Wang Ying: Oh, I remember. It was Liu Ning, you and I that were at the gym. It was rainy that day. We went to the gym to watch Lin Dan play badminton. He played with a player of Australia. We yelled for Lin Dan. He played very hard. Finally he won. We were happy. We jumped up and down.

⑴Zhao Yan, Liu Ning and Wang Ying ____      A. happy.

⑵They watched ____                          B. won.

⑶Lin Dan played with ____                    C. were at the gym.

⑷Lin Dan ____                                D. a player of Australia.

⑸We were ____                               E. a badminton game.

如图所示的电路，闭合开关S₁和S₂后，下列分析正确的是（）

浮游动物、藻类、贝类、虾、鱼、微生物等为某湖泊中生活的全部生物，他们统称为（　　）