某女，19岁。食少纳呆，脘腹胀满，面色萎黄，便溏，舌淡苔白，脉缓。其病机最有可能是A

患者，男性，24岁，冬春季节上腹痛发作已有4年。近半个月来上腹痛加重，伴反酸及饥饿痛，并有半夜痛，痛醒后进食使疼痛缓解。1小时前突然发作上腹部刀割样剧痛，大汗淋漓，面色苍白，腹痛迅速蔓延至全腹而来院急诊。 该患者在体检时最可能出现的体征是（）

A.肠鸣音亢进

B.振水音阳性

C.腹部板状强直

D.皮肤、巩膜黄染

E.移动性浊音阳性

细胞分化

Galloway, a mostly middle-class community northwest of Atlantic City, is part of a wave of districts across the nation trying to remake homework amid concerns that high-stakes testing and competition for college have fueled a nightly grind that is stressing out children and depriving them of play and rest, yet doing little to raise achievement, particularly in elementary grades.

Such efforts have drawn criticism from some teachers and some parents who counter that students must study more, not less, if they are to succeed. Even so, the anti-homework movement has been reignited in recent months by the documentary Race to Nowhere, about burned-out students caught in a pressure-cooker educational system. "There is simply no proof that most homework as we know it improves school performance," said Vicki Abeles, the filmmaker and a mother of three from California. "And by expecting kids to work a ’second shift’ in what should be their downtime, the presence of schoolwork at home is negatively affecting the health of our young people and the quality of family time. "

So teachers at Mango Elementary School in Fontana, Calif., are replacing homework with "goal work" that is specific to individual student’s needs and that can be completed in class or at home at his or her own pace. The Brooklyn School of Inquiry, a gifted and talented program, has made homework optional. "I think people confuse homework with rigor," said Donna Taylor, the Brooklyn School’s principal, who views homework for children under 11 as primarily benefiting parents by helping them feel connected to the classroom.

Research has long suggested that homework in small doses can reinforce basic skills and help young children develop study habits, but that there are diminishing returns. Still, efforts to roll back homework have been opposed by those who counter that there is not enough time in the school day to cover required topics and that homework reinforces classroom learning. In Coronado, Calif. , the school board rejected a proposal by the superintendent to eliminate homework on weekends and holidays after some parents said that was when they had time to help their children and others worried it would result in more homework on weeknights.

Homework wars have divided communities for over a century. In the 1950s, the Sputnik launching ushered in heavier workloads for American students in the race to keep up with the Soviet Union. The 1983 report "A Nation at Risk" and, more recently, the testing pressures of the No Child Left Behind law, also resulted in more homework for children at younger ages. A few public and private schools have renounced homework in recent years, but most have sought a middle ground. In Galloway, the policy would stipulate that homework cover only topics already addressed in class. Dr. Giaquinto, Galloway’s superintendent, said the goal of the proposed policy was to make homework "meaningful and manageable," noting that teachers would have to coordinate assignments so that a student’s total homework would not exceed the time limit.

From the first paragraph we learn that（）

A. most schools disapprove of testing and competition for college

B. homework can be done most efficiently by school students at night

C. Galloway has come up with an innovative way of raising achievement

D. Galloway’s effort to reduce the amount of homework has caused a stir

患者男，38岁。1小时前口服安眠药2瓶，由家人急诊入院，呼之无应答。

神志昏迷，护士迅速给予洗胃。操作图如下（缺图）

护士做图示动作的目的是（）。

A.防止患者呕吐

B.使患者更舒适

C.使患者更安全

D.增大鼻咽通道的弧度

E.增大咽喉通道的弧度

在外加能量停止后，具磷光的宝石能持续一定的时间发光。