【評論主題】【題組】55. Which of the following is a function of the tree bark as mentioned in the passage?(A) It all

【評論內容】文章中有這麼一句It gives the ...

【評論主題】【題組】55. Which of the following is a function of the tree bark as mentioned in the passage?(A) It all

【評論內容】文章中有這麼一句It gives the ...

【評論主題】41.根據物理原理，下列哪些家用電器一定要使用交流電源才能工作？（應選2項）(A)電磁爐(B)電鍋(C)電燈泡(D)電烤箱(E)變壓器

【評論內容】(A)電磁爐是利用電磁感應定律，讓金屬鍋...