问题
选择题
若规定
|
答案
∵
=ad-bc，a b c d
∴log
＜0等价于lg（x-1）＜0，1 1 1 x
∴0＜x-1＜1，
解得1＜x＜2，
故选A．
搜题请搜索小程序“爱下问搜题”
若规定
|
∵
=ad-bc，a b c d
∴log
＜0等价于lg（x-1）＜0，1 1 1 x
∴0＜x-1＜1，
解得1＜x＜2，
故选A．
| 完形填空。 | ||||
| Do you have the ability to live cheaply? Now here's a true story of an American girl, Sarah. 1 Sarah left university, she began to live in New York City on her own. She 2 a job in a publishing house, but the salary (薪水) was 3 $30, 000 a year. Her parents thought her life would be hard, but Sarah 4 live on her salary and still saved $5, 000 in a year. How was that 5 in one of the most expensive cities in the world? Cheap living 6 starts with keeping the big cost small. For most people, that 7 housing. So Sarah chose to share a flat with three other friends. Her next biggest cost was 8 . When she ate out, she went to cheap restaurants. 9 she bought a $9.99 whole chicken at a local restaurant. She then 10 the chicken bones (骨头) home and made soup out of them. Nowadays young people often 11 a lot of money on entertainment (娱乐). But Sarah said, "I enjoy walking 12 in New York City. I love going to museums and parks." Did Sarah feel poor 13 cheap living? Not really. She even managed to take two trips, one to the Netherlands, 14 to Portland. "Don't think of saving money as something 15 . It's a kind of game," said Sarah. | ||||
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