根据所给电路图（图甲），请在图乙中以笔划线代替导线将实物图补充完整．

填空 根据句子意思，用所给单词的适当形式填空，将答案写在答卷上。
⑴Can you imagine his ____ (walk) on the moon?
⑵The little girl____ (prefer) the red one and her mother bought it for her at last.
⑶Can you ____ (memory) all the words in one week?
⑷The cat's ____ (die) brought the whole family much sorrow.
⑸You ought to pay attention to ____ (listen) to the teacher carefully in class and be more careful not to make any stupid mistake..
⑹She remembered____ (close) the windows, but when she came back she found them all ____ (open).
⑺Finally she finished the tough work by herself ____ (success).
⑻Nowadays a great number of ____ (woman doctor) are very successful .
⑼ I am used to____ (send) her e-mails instead of____ (write) letters.
⑽Unless Tina ____ (study) harder from now on, she____ (fail) the exam.

黄旭华——中国核潜艇之父,当国家需要与家庭需要同时摆在面前时,毅然选择了国家需要。30年放弃亲情,隐姓埋名,为我国核潜艇事业的发展作出了重要贡献。他的事迹启示我们要(　　)

①热爱祖国,自觉承担责任

②报效国家,舍弃个人一切

③甘于奉献,实现人生价值

④爱岗敬业,做好本职工作

晚清时期清政府实行专利制度，允许企业享有长时间生产经营垄断权。1912年北京政府规定专利保护期限最高为5年。后财政总长周学熙等为其所设公司申请30年的专利权时，未获批准。这反映了民国初期（    ）