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问题 多项选择题

甲状腺囊肿的超声特点为()

A.圆形或椭圆形无回声区 

B.圆形或椭圆形强回声区 

C.边界光滑整齐 

D.侧方声影内收 

E.出血时在囊肿底部有低回声 

答案

参考答案：A, C, D, E

句型转换

句型转换。

1. There are some flowers on the desk. (改为一般疑问句)

    ________ there _________flowers on the desk?

2. The dog is black and white. (对划线部分提问)

    ________ _________ is the dog?

3. There is a box in the room. (改为复数)

    There _________ _________ in the room.

4. This is not her book. Is this your book? (同义句)

    This book is not ________. Is this book ________?

5. The students are in the classroom. (对划线部分提问)

     _________ _________ the students?

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多项选择题

货币政策时滞以中央银行为界限可分为（）

A、内部时滞

B、外部时滞

C、认识是指

D、行动时滞

E、分析研究时滞
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