两国或多国政府签订的双边或多边支付协议中规定用于有关贸易往来支付的外汇，被称为（）。
A.自由外汇
B.记账外汇
C.远期外汇
D.贸易外汇
参考答案：B
看图完成句子 一空一词。
1. How many boys and girls are there in the picture?
There are _____ boys and _____ girls.
2. What's the weather like in the picture?
It's _____ and _____.
3. What are the girls wearing?
They're wearing _____ and _____.
4. What's the boy in sweater doing?
He's playing the _____ and _____.
5. What are the other people doing?
They're _____ to the boy _____ singing songs.
下列情况下应考虑色素痣恶变，除了（）。
A.直径>5cm
B.局部有发痒、疼痛的症状
C.表面破溃，出血或形成溃疡
D.病变四周出现小的卫星状痣
E.边界模糊
