在一块长方形镜面玻璃的四周镶上与它的周长相等的边框，制成一面_爱下问搜题

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问题解答题

在一块长方形镜面玻璃的四周镶上与它的周长相等的边框，制成一面镜子．镜子的长与宽的比是2：1．已知镜面玻璃的价格是每平方米120元，边框的价格是每米30元，另外制作这面镜子还需加工费45元．设制作这面镜子的总费用是y元，镜子的宽度是x米．

（1）求y与x之间的关系式．

（2）如果制作这面镜子共花了195元，求这面镜子的长和宽．

答案

略

完形填空

Where did all the tigers go? That’s what Indian Prime Minister Manmohan Singh wants to know. India’s Sariska Project Tiger Reserve, once home to 26 tigers, is now home to none. Singh has ordered a police investigation into the 39 ，and created a new taskforce to save the 40 animals.
Tiger

s are an endangered species(物种). Half of the world’s tiger   41  live in India. For years, tigers have been disappearing from India’s national parks, but Sariska may be the last straw. And the government has to react.
On Thursday, Singh held the first meeting of   42  officials, wildlife experts, and related leaders, aiming to count the nation’s remaining tigers, and to come up with a plan to keep them safe.
It is not hard to guess why the tigers are disappearing. Poachers (偷猎者) can   43  the big cats for $50,000 each. Tiger skin and bones are popular in Chinese   44 . A single tiger tooth can fetch $120. Recently, a group of poachers admitted killing ten tigers in Sariska and were   45 .
“Indian tiger poaching is probably the biggest conservation problem in modern times.” said Belinda Wright, the head of the Wildlife Protection Society of India.
However, poaching isn’t the only   46 . Many poachers use advanced technologies, like night glasses and long–range binoculars. Forest security officers are paid so   47  th

at few of them bother to track down the poachers. Even if a security guard were to find a poacher, many carry only a stick to make him obey the law.
Tiger fans hope that Singh’s plans mean end for the poachers and 48 for the endangered species.

B．disappearance

D．achievement

单项选择题

患者，男，42岁。胃脘胀痛，攻痛连胁，嗳气频作，并呕逆酸苦，二便如常，舌苔薄白，脉沉弦。治疗应首选

A．足阳明、足厥阴经穴

B．足阳明经穴

C．手、足少阳经穴

D．任脉、足太阴经穴

E．足太阳、督脉经穴