⒍从下列人物中任选一位，分析他为什么是通人。（不超过45字）（4分）

鲁迅朱光潜马克思爱因斯坦

对图中葡萄酒产业特点的描述，符合图文信息的是

A.以工业为基础，产业部门单一

B.地域文化决定了葡萄酒的产量

C.工业产品间都有“上下游”联系

D.产业结构体现了可持续发展观念

Until recently most historians believed that trade along the Silk Road .

A. originated in the 2nd century BC

B. extended human migration into eastern Asia

C. began a million years ago

D. primarily benefited the Egyptians

D

Andrew Ritchie, inventor of the Brompton folding bicycle, once said that the perfect portable bike would be “like a magic carpet…You could fold it up and put it into your pocket or handbag”. Then he paused: “But you’ll always be limited by the size of the wheels. And so far no one has invented a folding wheel.”

It was a rare — indeed unique — occasion when I was able to put Ritchie right. A 19th-century inventor, William Henry James Grout, did in fact design a folding wheel. His bike, predictably named the Grout Portable, had a frame. that split into two and a larger wheel that could be separated into four pieces. All the bits fitted into Grout’s Wonderful Bag, a leather case.

Grout’s aim: to solve the problems of carrying a bike on a train. Now doesn’t that sound familiar? Grout intended to find a way of making a bike small enough for train travel: his bike was a huge beast. And importantly, the design of early bicycles gave him an advantage: in Grout’s day, tyres were solid, which made the business of splitting a wheel into four separate parts relatively simple. You couldn’t do the same with a wheel fitted with a one-piece inflated (充气的) tyre.

So, in a 21st-century context, is the idea of the folding wheel dead? It is not. A British design engineer, Duncan Fitzsimons, has developed a wheel that can be squashed into something like a slender ellipse (椭圆). Throughout, the tyre remains inflated.

Will the young Fitzsimons’s folding wheel make it into production? I haven’t the foggiest idea. But his inventiveness shows two things. First, people have been saying for more than a century that bike design has reached its limit, except for gradual advances. It’s as silly a concept now as it was 100 years ago: there’s plenty still to go for. Second, it is in the field of folding bikes that we are seeing the most interesting inventions. You can buy a folding bike for less than ￡1,000 that can be knocked down so small that it can be carried on a plane — minus wheels, of course — as hand baggage.

Folding wheels would make all manner of things possible. Have we yet got the magic carpet of Andrew Ritchie’s imagination? No. But it’s progress.

69. We can infer from Paragraph 1 that the Brompton folding bike .

A. was portable

B. had a folding wheel

C. could be put in a pocket

D. looked like a magic carpet

带电粒子垂直匀强磁场方向运动时，会受到洛伦兹力的作用。下列表述正确的是

A．洛伦兹力对带电粒子做功

B．洛伦兹力不改变带电粒子的动能

C．洛伦兹力的大小与速度无关

D．洛伦兹力不改变带电粒子的速度方向

随着我国城乡居民人均可支配收入的增加，一直被视为高档耐用消费品的轿车正悄然走进寻常百姓家。这说明

A．收入是消费的基础和前提B．消费拉动经济增长

C．物价水平影响人们的购买力D．生产与消费相互影响