63.A 由文章第六段的They want to find a female(雌性)so they sing to show how strong they are. The females listen and choose the best singer!可知，雄性鸟儿在早上唱歌是为了引起雌性鸟儿的注意。故选A。

　　64.B 由文章第一段可知A项是错误的;根据文章最后两段可知C、D两项也是错误的;由文章倒数第三段可知B项正确。故选B。

　　65.C 由文章后半部分的对话内容可知文章是围绕鸟儿晨鸣展开的，尤其是鸟儿为什么晨鸣，故选C。

　　66. F

　　67. Exams

　　68. No, it can’t.

　　69. Sports are very important for students.

　　70. 他们不必把所有的精力都用在学习上，而放弃运动和爱好。

　　71. A good player never gives up

　　72. They all want to break the world record

　　73. A dream team is considered to be the greatest team in its field

　　74. Which sports team do you like best

　　75. The five rings stand for five continents

　　76.One possible version：

　　Dear father,

　　Father’s Day is coming. I’d like to say something to you.

　　You always work hard so that I can receive a better education and live a better life. You are strict with me in my study and help me with my homework. When I failed an exam, you encouraged me to be confident and keep trying. When I had trouble in life, you always told me to be brave and smile at life.

　　You have given me so much, not only in my study but also in my life. Thank you for your deep love. Thank you for all that you have done for me. I love you! I hope you will be healthy and happy forever!

　　Happy Father’s Day!

　　Yours,

　　Li Hua