1，What does the writer think of the polar bear pictures taken by Keren Su?

A．Boring．    B．Terrified．    C．Ugly．  D．Loving and cute．

2．Where does Keren Su come from?

A．China．    B．Canada．     C．The US．  D．Russian．

3．What can we know from the fourth paragraph?

A．Polar bears like getting close to humans．

B．It isn’t easy to take pictures of these polar bears．

C．It’s fun taking pictures of polar bears．

D．Watching polar bears is more difficult than taking pictures of them．

4．What can we know from th e passage?

A．Global warming is getting worse．   

B．The number of polar bears is dropping quickly・

C．Getting close to nature is wonderful．

D．A polar bear mother doesn’t have many babie s・