肾移植术后并发肾动脉血栓形成时，无下列哪种表现（） A.肾无血

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问题单项选择题

肾移植术后并发肾动脉血栓形成时，无下列哪种表现（）

A.肾无血流灌注

B.肾灌注显像不显影

C.肾动态功能显像尚好

D.肾动态显像时不显影

E.肾静态显像时不显影

答案

参考答案：C

改错题

短文改错

此题要求改正所给短文中的错误。对标有题号的每一行作出判断：如无错误，在该行右边横线上画一个勾（√）；如有错误（每行只有一个错误），则改正：

注意：原行没有错的不要改。

Japan is a beautiful country，covering with many 1. _______

tiny rivers and high mountains.Japan is also a pleased 2. _______

country. It is known for "the land of the cherry blossom 3. _______

（樱花）" because of the spring of the year the cherry 4. _______

trees are so beautiful. Everywhere there are hundred of 5. _______

different kinds of wild flowers.

Where there are not natural gardens，the Japanese 6. _______

has made their own. Because the islands are so hilly 7. _______

there is a great shortage of the soil，so very little bit8. _______

is used. No matter how tiny may be，every home has its 9. _______

own little garden. Japan is a country worthy of a visit. 10. ______

单项选择题

若f″（x）存在，则函数y=ln[f（x）]的二阶导数为：（）。

A．

B．

C．

D．ln″[f(x)]·f″(x)