问题
单项选择题
下列哪项是乳腺癌出现表面皮肤凹陷的机制
A．癌肿侵入乳腺管使其收缩
B．癌细胞堵塞 * * 皮下淋巴管
C．癌细胞浸润大片皮肤
D．癌肿侵犯Cooper韧带使其收缩
E．以上都不是
答案
参考答案：D
解析：[解题思路] 乳腺癌出现表面皮肤凹陷是癌组织侵入Cooper韧带使其收缩所致，是乳腺癌早期常有的体征。
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下列哪项是乳腺癌出现表面皮肤凹陷的机制
A．癌肿侵入乳腺管使其收缩
B．癌细胞堵塞 * * 皮下淋巴管
C．癌细胞浸润大片皮肤
D．癌肿侵犯Cooper韧带使其收缩
E．以上都不是
参考答案：D
解析：[解题思路] 乳腺癌出现表面皮肤凹陷是癌组织侵入Cooper韧带使其收缩所致，是乳腺癌早期常有的体征。
We have no idea about 1 men first began to use salt. But we do know that it had been used in many different ways 2 the history. For example, in many history books it is 3 that people who lived three thousand years ago 4 salted fish. Thousands of years ago in Egypt（埃及）, salt 5 keep the dead. It can keep the dead bodies 6 decay.（腐烂） In the eighteenth century, a person who stole salt was 7 to have broken the 8 . if a person was caught stealing salt, he would be thrown into 9 . Books also record that in England about ten thousand people were put into prison during that century 10 stealing salt! In the year 1553, if a man took 11 than his share of salt, he would be thought to have broken the law and would be 12 punished(惩罚). Salt was very 13 on the dinner table of a king. It was always put 14 the king when he sat down to eat. Then important visitors sat near the salt 15 less important visitors were given seats farther away from it.
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