由于宫外孕假如裂开便会流血,血液注入阴道后穹窿腹膜腔内,腹膜后有使血液脱化学纤维的功效,故可让血液凝结遇阻,假如从穹窿穿刺术出去的血液不是凝结得话,就可以分辨派出所提取的血液来源于骨盆而不是血管,因此猜疑宫外孕的病人作后穹窿穿刺的目地是以便可以确立确诊是不是宫外孕。
给笔友sam写信介绍旅游地方,他下个月就要到中国旅游。根据信息给他介绍国内非常值得一去的地方。首都北京 长城--世界七大奇迹之一;故宫博物馆--辉煌壮观的清朝宫殿群;圆明园--举世闻名的皇家园林<br>陕西省 秦陵兵马俑--世界上出土的最大艺术宝库;华山--悬崖峭壁,山势险峻;离西安不远<br>湖南省 张家界--世界森林公园;韶山--伟大领袖毛泽东的故居<br>Dear Sam,I'm very glad to hear that you'll travel to China next month. Now I'll tell you something about the greatest places of interest in out country.<br>First, Beijing is the capital city of China. There are so many amazing places you cannot miss. For example, the Ten-thousand-li Great Wall--one of the seven wonders in the world; the Palace Museum--the Imperial Palace of the Qing Dynasty; Yuanmingyuan -- a world--famous imperial garden.<br>Second, you'd better go to Xi'an of Shanxi province for the Terra Cotta Warriors lies there. And you may also go to Huashan -- a dangerously steep mountain. It's not far from Xi'an<br>At last I hope you'll pay a visit to Hunan .Hunana is famous for Zhangjiajie, a place with beautiful mountains and rivers .By the way, have you ever heard of Maozedong? He wa one of the g