China is famous for its bewildering and oftentimes confusing highway interchanges (立体交叉道)，but the Qianchun interchange in     1     mountainous province of Guizhou is the only one     2     actually looks like a giant rollercoaster for cars and trucks.

    3     (Construct)on the Qianchun Interchange began in 2009，but the massive road knot was only completed last year.It       4       (consist)of 18 different ramps，in 8 directions，on five different layers，with the highest one     5     (stand)37 meters above ground.Like the nearby Huangjuewan Overpass，in Chongqing,   this incredibly complex infrastructure project has been labelled a nightmare for     6     (motorist) trying to find their way around.

People on social media pointed     7     that GPS systems would be confused by the five       different layers of road，but officials claims that the directions and exits on the interchange are           8     (clear)marked and that even if you make mistakes，it's always easy to turn around.Still，just looking at this thing leaves me     9     (confuse).I can’t imagine     10     having to       find my way around it must be like.

As the coronavirus (冠状病毒) outbreak continues, many Americans are afraid of     1    (use) public transportation. They also are looking for ways     2    (get) exercise without having to go to a gym, as well as approaches to enjoying the outdoors. So, it is not     3    (surprise) that the pandemic (流行病) has led to a major increase in bicycle sales.

In the United States, bicycles at big stores like Walmart have sold out. And small bicycle stores cannot keep up with demand     4     “family-style” bicycles: the low-cost, easy-to-ride models. “The bicycle industry is seeing its biggest sales increase since the oil crisis of the 1970s,” said Jay Townley,     5     industry expert. “People...have panicked.” Townley said. He     6    (compare) the sale of bicycles to the rush to buy products like toilet paper at the start of the pandemic.

The rise in bicycle sales is not happening just in the United States. Cities like Manila in the Philippines and Rome, Italy have created bicycle paths for the growing number of people     7     want to avoid public transportation. In London, city     8    (official) plan to ban cars from some central roads.

Bike shop owners in Manila say demand is even     9    (strong) than what they see at Christmas time. In Italy, the government’s economic support plan included a 500-euro payment to help with the cost of a bicycle.

Of course, you can only buy a bicycle if you can find a bicycle. In the U.S., the shortages now mean     10     may take many months to get one.

It's common       1     (see) food delivery workers on electric bikes through crowded cities in China. Most of them are in     2     hurry. However, such reckless(鲁莽的) behaviors often cause serious problems.

One deliveryman surnamed Li     3    (interview) the other day. He's been only doing this job for 2 weeks but has already ridden in wrong lanes a few times just to be punctual. In the     4     (one) half of last year, food deliverymen had 76 traffic accidents in Shanghai alone,     5     means on average, a food deliveryman got hurt or died every 2.5 days.

The phenomenon is       6    (close) related to the growing demand for delivery services, reported People's Daily. About 10% of Chinese are turning to food delivery services, according to China Radio International. Such a huge market     7    (lead) to booming delivery growth by now, with companies offering high salaries to attract new staff.

However, food de liverymen are often under high pressure, faced with fines of ¥20 for being late and up to ¥200 for receiving complaints. Also, the more orders, the higher earnings. Thus,     8    (safe) pops up as a big concern.

Solution? Yes. Shanghai has laid stress on traffic rules. Now in Shenzhen, if caught     9    (break) traffic rules twice, the deliveryman is banned     10     driving vehicles for a whole year!