如图,已知▱ABCD,∠A=45°,AD=4,以AD为直径的半圆O与BC相切于点B,则图中阴影部分的面积为( )
A:42
B:π+2
C:4
D:22
非诉讼途径具有高效、灵活和多样的特点,是维护合法权益的有效途径和理性选择。( )
① How tall is it? ____ A. Zhang Yong.
② Who is the tallest boy? ____ B. Maybe 5 metres.
③ What size are your shoes?____ C. Forty yuan.
④ How much is your T-shirt? ____ D. Size 38
⑤ How old are you?____ E. I'm fifteen years old.