问题
单项选择题 B型题
癌细胞仅浸润黏膜上皮层，未浸润到黏膜下层的属于（）
A.癌前病变
B.原位癌
C.良性肿瘤
D.恶性肿瘤
E.交界性肿瘤
答案
参考答案：B
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癌细胞仅浸润黏膜上皮层，未浸润到黏膜下层的属于（）
A.癌前病变
B.原位癌
C.良性肿瘤
D.恶性肿瘤
E.交界性肿瘤
参考答案：B
Jane is a good English teacher in M. T. School．The students like her and her 36 very much．Now，summer is coming．The weather is very 37 ．The students are often sleepy（困倦的），and don’t like to listen to 38 classes． “ 39 can I make the students listen to my classes?”Jane asks herself．One day，she 40 some riddles（谜语）in a book．“It can be a 41 way．The students may like to answer riddles．”Jane thinks． Next afternoon，she asks a riddle 42 class，“It has got two hands and a face， 43 no feet．What is it?” The students are happy about the riddle．One of the students 44 and says，“It’s a clock（时钟）．” “Yes，you’re 45 ．”Jane says．She’s happy that the students are not sleepy now．
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