问题
单项选择题
早期腮腺粘液表皮样癌的治疗方法宜选用（）
A.包膜外摘除肿瘤
B.放疗
C.肿瘤及腮腺切除，保留面神经
D.化疗加放疗
E.肿瘤及腮腺，摘除，不保留面神经
答案
参考答案：C
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早期腮腺粘液表皮样癌的治疗方法宜选用（）
A.包膜外摘除肿瘤
B.放疗
C.肿瘤及腮腺切除，保留面神经
D.化疗加放疗
E.肿瘤及腮腺，摘除，不保留面神经
参考答案：C
| 完形填空。 | ||||
| A London family were enjoying an unusual holiday in Iceland last month when things went very wrong. Anne, Ben and their two children, Claire and Sam, __1__ died in freezing water. The accident happened while the family were visiting a glacier (冰河). It is a beautiful place. __2__ were walking along the edge of the ice when suddenly they fell off the ice __3__ the cold water. Ben __4__ a cry for help and ran to see what was happening. "I found my wife and children in the ice water. And then my wife Anne just sank (沉没) __5__ the ice. It was terrible." Ben __6__ his children from the water, but when he went to save his wife, he fell in, too, as he was trying to __7__ Anne. __8__ when he was in the water, he went all out to catch hold of Anne and helped her out of the water." Her face was blue. __9__ was really frightening." Anne spent three days in hospital there before the family __10__. And what are their plans for their next holiday? | ||||
|
的光滑斜面上，并被斜面上一个竖直的光滑挡板挡住，处于平衡状态。画出物体的受力图并求出挡板对球体的弹力和斜面对球体的支持力。（已知
＝0.6，
＝0.8，g＝10m/s2） 