光纤通信正在向长波长、（）单模光纤通信发展。A.超长波长 B.短波 C.长波 D.长

---I don’t think your team can beat theirs.

--____. But we could if Lin Tao were on the team.

A．No, we can’t

B．Yes, we can’t

C．Yes, we can　

D．No, we can

Beijing: The United States and North Korea had their first (1) in four months here this afternoon as part of the (2) negotiations on how to end North Korea’s nuclear program, but diplomats played clown prospects for (3) . The talks are at the Diaoyutai (4) , a sprawling, garden-filled (5) in western Beijing, with negotiators gathering around a giant hexagonal table built to (6) the six delegations. The Chinese placed the Americans and the North Koreans in (7) , which may have facilitated the (8) between Mr. Kelly and Mr. Kim, which took place (9) in the afternoon session. The two spoke for 30 minutes, two Asian diplomats (10) . The early indications of how the talks are going (11) . A South Korean who took part in the meetings described North Korea as "willing to (12) through dialogue." Chinese officials also put a (13) on the talks. "I heard talks this morning and this afternoon were very successful," the Foreign Minister, Li Zhaoxing, told delegates (14) . But Japanese and Russian participants were (15) . The Russian (16) , Aleksandr Losyukov, described the negotiations as (17) . "So far, the countries have put forward a number of (18) , which are (19) the development of these talks," he told Russian reporters in Beijing. "I would not say that I am feeling (20) ."

患者男性，42岁，被人用铁器击伤头部2h后被送到急诊室，伤后有短暂昏迷史，约30min。主诉头痛，伴恶心，未吐。体检：神志清楚，检查身体配合，双瞳等大等圆，四肢活动正常，左侧颞顶部有皮下血肿。

患者头颅CT复查示左侧颞顶部硬膜外血肿增大，血肿量约60ml，中线右移，此时最佳处理方案是（）

A.立即急诊手术行颅内血肿清除十去骨瓣减压

B.继续保守治疗，加强脱水以缓解颅内压

C.颅骨钻孔置管，注入尿激酶行血肿引流

D.脑室外引流以缓解颅内高压

E.腰椎穿刺释放脑脊液以缓解颅内压增高

心肌细胞能量生成障碍见于（）。

A.甲状腺功能亢进

B.维生素B1缺乏症

C.严重贫血

D.心肌炎

E.冠状动脉硬化

流动相为气体，固定相为固体的色谱法，叫做（）。

A.液相色谱法

B.离子色谱法

C.气液色谱法

D.气固色谱法

E.气相色谱法