【简答题】根据短文回答问题。 Amy: What does your father do? Jenny: He is a teacher. Amy: Where does he work? Jenny: He works in a school. Amy: How does he go to work? Jenny: He goes to work by bus. Amy: What does your m...
【简答题】下表是元素周期表的一部分: 1 H 1.008 2 He 4.003 3 Li 6.941 4 Be 9.012 5 B 10.8l 6 C 12.01 7 N 14.0l 8 O 16.00 9 F 19.00 10 Ne 20.18 11 Na 22.99 12 Mg 24.31 13 Al 26.98 14 Si 28.09 15 P 30.97 16 S 32.06 17 Cl 35.45...