1 . China used to be called the “Kingdom of Bicycles” in the 1980s and the 1990s, but since then, cars     1     (take) over the country. Because of traffic jams,     2     can be difficult to travel across major Chinese cities. Even     3     (go) a few kilometers can take up to an hour. Now, new apps that help people use bikes are being used more and more across cities.

Cheng Li started using bike share services about six     4     (month) ago. He said now he was using a car less and the metro (地铁)    5    . “After I get off the metro, I usually have to walk another kilometer or two, so I’ll grab a bike share and go. It is convenient.”

For many, the best part about cycling is how easy it is to do.     6    , many of its bike share stations were not placed in convenient places. Now, it is easy to find a bike, and to register with     7     smart phone.

Meanwhile, there is now a lot of competition among bike share providers because of their popularity. Some providers are trying to flood the streets     8     bikes to be more visible. Sometimes there are so many bikes     9     they completely block the sidewalks.

This has become a problem for city governments. It is not uncommon for bike users to leave bikes in the middle of the street or on the sidewalk. This blocks cars and people in already     10     (crowd) cities.

A woman interviewed by the media said, “Bike sharing is really convenient, but we need taking care of the problem of illegally parked bikes.”

2 . 在未给提示词的空白处仅填写 1个适当的单词，在给出提示词的空白处用括号内所给词的正确形式填空。

Beijing was once a city of bikes, the capital of a country    1    (know) as the Bicycle Kingdom, where cars were reserved for official and political business.    2    , decades of remarkable economic growth led to a huge flowing of cars in the city. Owning one became not just a marker of reaching the middle class but also a    3    (require) for marriage. As the economy boomed, autos pushed bikes off the roads,    4    (create) heavy pollution and miserable traffic.

Fortunately, now Beijing may be returning to its roots with a modern twist. Thanks to about 20 technology companies, brightly coloured shared bikes    5    (flood) Beijing since last year. Many local residents welcome the shared bikes    6    the flexibility and freedom they offer. They pick up the bikes and then ride and drop    7    off anywhere they like, locking the back wheel, with no need to find a fixed place.

Analysis in China say there are three factors    8    contribute to the sudden increase of bikes: a lot of cash looking for a home, a good idea and government support. “As the city’s population grew, traffic jams got    9    (bad).” Cai, the Ofo spokeswoman, said, “Shared bikes could solve the ‘last mile’ problem in    10    environmentally friendly way.”

3 . 阅读下面短文，在空白处填入 1个适当的单词或括号内单词的正确形式。

In 1863 the first underground passenger railway in the world opened in London. It ran for just under seven kilometers and allowed people to avoid terrible     1     (crowd) on the roads above as they travelled to and     2     work. It took three years to complete and was built using an interesting method. This included digging up the road,    3     (lay) the track and then building a strong roof over    4     top. When all those had been done, the road surface was replaced.

Steam engines     5     (use) to pull the carriages and it must have been    6     (fair) unpleasant for the passengers, with all the smoke and noise. However, the railway quickly proved to be a great success and within six months, more than 25,000 people were using     7    every day.

Later, engineers     8     (manage) to construct railways in a system of deep tunnels (隧道）, which became known to the tube. This development was only possible with the     9     (introduce) of electric-powered engines and lifts. The central London Railway was one of the most     10     (success) of these new lines, and was opened in 1900. It had white-painted tunnels and bright red carriages, and proved extremely popular with the public.

4 . When you are in England you must be very careful in the streets     1     the traffic drives on the left. Before you cross a street you must look to the right first     2     then the left. In the morning and in the evening when people go to or come from     3    , the streets are very busy. Traffic is most     4    (danger) then.
When you go by bus in England, you have to be careful,     5    . Always remember that the traffic moves on the left. So you must be careful.     6    (have) a look first, or else you will go     7     wrong way.
In many English cities, there are big buses     8     two floors. You can sit on the     9    (two) floor, from     10     you can see the city very well. It’s very interesting.