在元素周期表的金属与非金属的分界线附近可以寻找 [ ]
A.稀有金属材料
B.半导体材料
C.催化剂材料
D.耐高温耐腐蚀的合金材料
答案:B
句型转换
1. Linda jumps higher than Tina.
Tina didn't jump _ _Linda.
2. The work is not difficult to do.
difficult to do the work.
3. Johnson did well and Mike did well, too.
Johnson did Mike.
4. Chen Mei doesn't throw as far as Li Hong does.
Chen Mei _Li Hong does.
5. Lin Feng jumped higher than any other student in his class.
Lin Feng jumped all the students in his class.