Do you take me for a fool?
A:cheat
B:silly person
C:cooker
D:Ruler
把一个直角4等分,每一份是____ 度____ 分.
Helen and Bob are working hard these days because they will put ______ a short play in the school Talent(才艺) show.
主族
周期
ⅠA
ⅡA
ⅢA
ⅣA
ⅤA
ⅥA
ⅦA
2
①
②
③
④
3
⑤
⑥
⑦
⑧