关木通为（）科植物（）的干燥藤茎。
参考答案：马兜铃科、东北马兜铃
改错。
( ) 1. What's would you like? __________________
A B C
( ) 2. I would like some beefs. __________________
( ) 3. I can use chopstick now. __________________
( ) 4. Everything are ready. __________________
( ) 5. He have a good time. __________________
—What has made him look like lacking sleep?
—_______ his wife is ill and he has to get up several times a night to attend to her.
A．For
B．Because
C．That
D．What
