【名词&注释】
自花传粉(self pollination)、异花传粉(cross pollination)
[单选题]闭花传粉属自花传粉，开花传粉属异花传粉。( )
A. 正确
B. 错误
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举一反三：
[单选题]B I hated dinner partics. ButI decidedto give them anothar shot because I'm in LondonAnd my friend Mallery invited me. And because dinner parties in London are very differenfrom those back in New york. There, 'Tin having a dinner party' means: "I'm booklng a table for t2 at8 restaurant you can't afford and we'll be sharing the cheque evenly, no matter what you eat." Worse, in Manhanan there is always someone who leaves before the bijanives. They'll throw down cash, half of what they owe, and then people like me, who don'drink, end up paying even more. But ifI try to tree the same trick, the hostess will shou:"Where are you going?" And it's not likeI can say I have somewhere to go: everyone know shave nowhere to goButin London, dinner parties are in people's homes. Not only that, the guests are aninteresting mix. The last timeI went to one, the guests were from France, India. Denmark and Nigeria; it was like a gathering at the United Nations.hI New York. the mix is less striking It's like a gathering at Blooming dale's,a well-known department store.
A. For New Yorkers, talking about other parts of the world means Brooklyn and Queensi New York. But at Mallery's, whenI said thatI had been to Myanmar recently, people knew where it was.In New York people would thinkit wasa usual new club
B. What does the word "shot"in Paragraph j probably mean?
C. Choice.
D. Try
E. Style.
F. Goal
[单选题]DAndrew 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.”
A. 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.
B. 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.
C. 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.
D. 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.
E. 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.
F. 69. We can infer from Paragraph 1 that the Brompton folding bike .
G. was portable
H. had a folding wheel
I. could be put in a pocket
J. looked like a magic carpet
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