单词拼写 (每小题1分)
根据所给汉语注释，写出所缺单词的正确形式(每空限写一词)。
⒈ She works very hard, and she is a great _________(安慰) to her parents.
⒉ It’s ______________ (不必要的) for you to have a talk with her.
⒊ _____________ (雷雨) is common in summer.
⒋ The girl enjoys singing and dancing, and she is _______ (敏锐) at music.
⒌ He is the __________ (冠军) of the boys’ 200-meter race at the sports meet.
⒍ He likes playing the piano a lot and wants to be a ______ (钢琴家) in the future.
⒎ The boss is ____________ (乐观的) about his factory.
⒏ Did you get seasick during the __________ (航海)?
⒐ Please _______ (加热) the milk until it boils.
⒑ Wool is one of the chief _________ (出口物) of Australia.