转移性骨肿瘤的超声表现哪一项是不正确的（）。 A.局限性骨质破坏 B.边缘不整齐

短文改错

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文.

文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除

或修改。

增加:在缺词处加一个漏字符号(^)，并在其下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线，并在该词下面写出修改后的词。

注意:

1.每处错误及其修改均仅限一词;

2.只允许修改10处，多者(从第11处起)不计分。

     I learned early in life that I had to be more patient and little aggressive. From the time I was

about four until I was about six, I destroyed each of my toy. I was happy when the toys worked,

but when things did wrong, I got angry and broke it. For a while parents bought me new toys. But

before long they began to see which was happening. When I tear apart my fifth birthday toy train,

my father said, "That's it. No more toys to you." My punishment lasted a year. Meanwhile, I found

out that with more patience I must make my toys to last My attitude changed from then on.

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最常见的肛管直肠周围脓肿是

A．肛周脓肿
B．坐骨直肠窝脓肿
C．骨盆直肠脓肿
D．直肠后窝脓肿
E．高位肌间脓肿

最早融理、法、方、药于一体的医学著作是（）

A.《和剂局方》

B.《千金方》

C.《黄帝内经》

D.《伤寒杂病论》

E.《五十二病方》

与微机型变压器保护同屏配置的装置，可将开关场送来的各种变压器（）继电器接点重动后实现延时、发信和跳闸等功能。

A.各种保护

B.非电量保护

C.综合保护

下列结构类型中可以用水蒸气蒸馏法提取的是（）

A.黄酮

B.蒽醌

C.小分子苯醌和萘醌

D.三萜

E.甾体