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【简答题】
已知函数f（x）=x 3 -x （1）求曲线y=f（x）在点M（t，f（t））处的切线方程 （2）设a＞0，如果过点（a，b）可作曲线y=f（x）的三条切线，证明：-a＜b＜f（a）
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【单选题】It’s a family _____________ to get together and have a grand meal on the New Year’s Eve.
A.
traditional
B.
tradition
【简答题】下列各种金属或合金牌号中属于 (1)滚动轴承钢的是( )，最终热处理可选用( )； (2)碳素工具钢的是( )，最终热处理可选用( )； (3)优质碳素结构钢的是( )，最终热处理可选用( )； (4)合金弹簧钢的是( )，最终热处理可选用( )； (5)合金工具钢的是( )，最终热处理可选用( )； (6)合金渗碳钢的是( )，最终热处理可选用( )； (7)铸铁的是( )： (8)不锈钢的是(...
【单选题】Most people buy a lot of gifts just before Christmas. But some people think they buy too much. They have started a special day called Buy Nothing Day. They don’t want anyone to go shopping on that day...
A.
Buy Nothing Day has become popular in the United States.
B.
Restaurants have a tradition of donating food on holidays.
C.
Gift shops are expected to be close on Buy Nothing Day.
D.
Children like the idea of Buy Nothing Day best.
【简答题】根据短文内容，从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 It’s not just women who wear skirts. 1 In Scotland, men wear a kind of skirt called kilt. The kilt is their national dress and an important part of their tr...
【简答题】： 二、给定资料 1. 据全球最大财经信息供应商汤森路透集团(Reuters)发表的报告称，从2009年年初，截至2009年2月17日，在全球跨境并购规模同比下降35%的情况下，中国企业今年的海外收购总额同比增加40%，涉及金额达到218亿美元，仅次于德国，居世界第二位。 中国企业的大规模海外并购案风起云涌。先是中铝宣布195亿美元注资全球矿业巨头力拓方案，若不是力拓最终毁约，险些成就了中国企业有...
【简答题】The Luck of the Irish Look at a map of Britain, and the island on the left is Ireland. It’s a small but beautiful country with a long tradition of folk music. Up until 10 years ago just about the only...
【简答题】Going to the park with your family is a time-honored tradition during the warmer months whether you live in the city or in a rural area. The most common thing for kids to do at the park is to play on ...
【简答题】It’s not just women who wear skirts. 小题1: In Scotland, men wear a kind of skirt called kilt. The kilt is their national dress and an important part of their tradition. A kilt is a colored skirt reachi...
【简答题】My husband is reading The Secret Garden aloud to our kids. They are at the part where Mary has told Colin that she’s found the garden her mother loved. It’s an exciting moment. But the passage I’m wai...
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