患者女，56岁，右小腿肿块4．5cm×3cm×2cm，边界清楚，切面灰白质韧。镜下细
题型：单项选择题
问题：
患者女，56岁，右小腿肿块4．5cm×3cm×2cm，边界清楚，切面灰白质韧。镜下细胞呈多形性，伴有奇异型肿瘤巨细胞及脂肪母细胞样细胞，部分梭形细胞排列成编席状结构，核分裂象多见。免疫组化：Actin（+）、Des（-）、CD68（+）、S-100（-）。诊断为（）
A.多形性脂肪肉瘤
B.多形性横纹肌肉瘤
C.多形性恶性纤维组织细胞瘤
D.平滑肌肉瘤
E.纤维肉瘤
题型：单项选择题
阅读下面短文，并借助上下文和插图补充所缺信息。
每个空格只能填写一个形式正确、意义相符的单词。
Last Sunday, my classmates and I went to Guishan Hill for a picnic. The (1)______ was fine and all of
us were excited and happy. We went there by (2)_______ with fruit, eggs, meat, vegetables, cookers and
some other things.
About an hour later, we (3)_______ at the foot of the hill. There was s big lake and many green trees.
Birds were singing songs. How wonderful they were! At noon all of us were busy preparing (4)_________
the picnic. Some of us were getting the water, some were cooking, and (5)_________ were putting a big
cloth on the grass. At one o'clock in the afternoon, the lunch was (6)________.
After lunch, we (7)________ a great time singing, dancing, drinking and talking.(8)_______ three o'clock,
we began to climb the hill. The hill was quite high, but we all tried to (9)________ to the top of it. On the
(10)________ of the hill, we felt that we were much closer to the sky, and we saw the flying birds more
clearly.