画一个直径是4cm的圆．
4÷2=2（厘米），
以点O为圆心，以2厘米为半径，画圆如下：
—Excuse me ,where is Xinhua Bookshop?
—Just 200 metres away. You can find it______ [ ]
A. easy
B. hard
C. easily
D. hardly
_____ can help to indicate different expressions. [ ]
A. Homophones
B. Emotives
C. Acronyms
D. Chatline
