认真观察下面一幅漫画，按要求答题。

如果 $\frac{1}{3}$ x^a+2y³与﹣3x³y^2b﹣1是同类项，那么a，b的值分别是（   ）

一座长方体花岗岩石碑，质量为4.2×10³kg，底面积为0.5m²（g取10N/kg）.求：

根据句意和提示写出单词，完成句子.
(1)The iPhone 5 is one of the ____ (参观者). He is looking for it everywhere
(2)I'm sorry that the dog you once played a trick on ____  (攻击) you .
(3)Turn on your TV, and you can see Chairman Xi____  (接受) the interview of the reporter from CCTV now.
(4)The fourth day of the week is____  (星期三).
(5)When I passed the finishing line, my teacher cheered with____  (激动的)look.
(6)We are ____  (true)proud of our woman astronaut,Wang Yaping.
(7)Shao Yifu's great ____  (achieve) is never going to be forgotten.
(8)Peng Liyuan is a woman of great charm, she has an____  (attract) quality.
(9)About three____ (twenty) of the doctors in the hospital are women.
(10)When a strong wind came from the northwest, the heavy haze(雾霾) in Yancheng began to____  (appear).  

亚洲北、东、南三面分别濒临的海洋是北冰洋、大西洋、印度洋。