问题 单项选择题

男婴,1岁半,因智力发育障碍,体格发育迟缓来就诊,查体:眼距宽、鼻梁低,眼外侧上斜,伸舌,四肢肌张力低下,该患儿最可能阳性的检查结果是()

A.血T、T下降,TSH升高

B.尿粘多糖阳性

C.药物刺激GH释放峰值<5ng/ml

D.染色体检查异常

E.尿三氯化铁试验阳性

答案

参考答案:D

材料分析题

阅读材料,回答下列问题。

2009年9月14日中国第四个航天发射场—海南航天发射场在海南省文昌市开始动工建设。文昌市位于海南省东北部,地处东经108°21′至东经111°03′,北纬19°20′至北纬20°10′之间,东、南、北三面临海。海南航天发射场是中国在低纬度滨海地区建设的首个航天发射场。下图为我国西昌和文昌卫星发射场地理位置分布比较图。

(1)试分析西昌航天发射场的优越条件。

                                                                                                                                                                

                                                                                                                                                                

(2)结合材料二中的信息,说明我国在海南省文昌市选址建设航天发射场的理由。

                                                                                                                                                               

                                                                                                                                                               

(3)试分析我国在海南建设发射场的重要意义。

                                                                                                                                                               

                                                                                                                                                              

单项选择题