在公司证券中，通常将银行及非银行金融机构发行的证券称为( )。
A．股票 B．公司债券C．商业票据 D．金融债券
参考答案：D
按要求改写下列句子。
1. We also bought a purple blouse.( 改为否定句)
We_____ _____ a purple blouse, ______.
2. Mary’s parents work in a restaurant.(就画线部分提问)
_____ _____ Mary’s parents work?
3. It’s cloudy today.(就画线部分提问)
______ the weather _____ today?
4. He read a book about history.(变为一般疑问句)
_____ he _____ a book about history?
5. He does his homework after school.(改为否定句)
He _____ _____ his homework after school.
我国慢性肾衰竭的最常见病因是（）
A.慢性肾小球肾炎
B.糖尿病肾病
C.高血压肾病
D.多囊肾
E.梗阻性肾病
