[单选题]在路堤较高,边坡坡面未做防护而易遭受路面表面水流冲刷,或者坡面虽已采取防护措施但仍有可能是受到冲刷时,应沿路肩外侧边缘设置_____,汇集路面表面水,然后通过泄水口和急流槽排离路堤。
A.边沟
B.拦水带
C.硬路肩
D.暗沟

Oil and gas will run out too fast for doomsday global warming scenarios to materialize, according to a controversial new analysis presented this week at the University of Uppsala in Sweden. The authors warn that all the fuel will be burnt before there is enough carbon dioxide in the atmosphere to realize predictions of melting ice caps and searing temperatures. Defending their predictions, scientists from the Intergovernmental Panel on Climate Change say they considered a range of estimates of oil and gas reserves, and point out that coal-burning could easily make up the shortfall. But all agree that burning coal would be even worse for the planet.
The IPCC’s predictions of global meltdown pushed forward the 1997 Kyoto Protocol, an agreement obliging signatory nations to cut CO₂ emissions. The IPCC considered a range of future scenarios, from unlimited burning of fossil-f
A. There will be enough oil and gas if the 40 IPCC scenarios to come to pass.
B. We should cut CO₂ emissions.
C. We should stop using fossil fuels.
D. The oil and gas is insufficient even if the 40 IPCC scenarios to come to pass.

病历摘要:患者女，36岁，因右侧面部歪斜2小时步行入院。患者2小时前起床刷牙时发现右侧不能鼓腮，照镜后发现右侧面部歪斜，右眼不能完全闭合，遂来院就诊。患者一周前曾有上呼吸道感染史，伴有头痛、鼻塞、咽喉痛等症状，经治疗症状基本消失。患者自幼双耳间歇性流脓，有时脓液味臭，伴听力下降。检查：右侧面部额部平坦，不能邹额；右眼不能完全闭合，鼻唇沟变浅，鼓颊漏气。双耳道干洁，双侧鼓膜紧张部中等大穿孔，鼓室粘膜光滑、无充血。纯音测听检查双耳混合性聋，气骨导有差距，气导语频平均50dB，骨导语频平均25dB。