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问题 单项选择题

硬膜外脓肿的MRI诊断依据是（）

A.T1及质子密度像，感染处硬膜外出现较高信号影

B.矢状位质子密度像，硬膜外出现条状高信号影

C.质子密度及T2像可显示脓肿壁呈低信号影

D.硬膜囊和脊髓受压移位

E.上述各项全部正确

答案

参考答案：E

解析：硬膜外脓肿的MR表现。

单项选择题

禽巴氏杆菌病急性型病理变化是( )。

A．纤维素性肺炎

B．咽峡炎

C．肝脏表面和切面有许多针尖大小坏死灶

D．以上都是

E．以上都不是
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句型转换

句型转换。（根据要求改写下列句子，每空一词。）

1. What do you think of the soap opera? (同义句) 

    _______ do you _______ the soap opera?

2. Tom had to stay at home yesterday. (一般疑问句)

    _______Tom _______ to stay at home yesterday?

3. Wear sports shoes for gym class. (否定句)

    ________ ________ sports shoes for gym class.

4. It is an interesting book. (改为感叹句)

    _______ _______ interesting book!

5. They are going to have a picnic this Sunday. (改为一般疑问句)

    _______ they going to _______ a picnic this Sunday?

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