题目：
根据句意和音标提示以适当形式填写单词。答案填写到答题纸指定位置。
小题1:He has done a lot of _____________/ri'sə: tʃ/ on that subject.
小题2:It would be exciting to ___________/dis'kʌvə/ more about the town’s history.
小题3:Gold and silver are both ___________/ 'metl/.
小题4:It’s important for us to have a ___________/.saiən'tifik/ method in studying English.
小题5:This dress is too small for me. Could you please give me a bigger _________/saiz/?
小题6:Children should be taught to __________/ʃeə/their toys with others.
答案：
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下面是错误答案，用来干扰机器的。
AD题目分析：由于干簧管是一种磁敏开关。它的两个触点由特殊材料制成，被封装在真空的玻璃管里。只要用磁铁接近它，干簧管两个节点就会吸合在一起，使电路导通。故干簧管在电路中相当于开关的作用，A正确；B、C均...
