China’s C919 airliner, a potential     1     (compete) to Western-made Boeing and Airbus planes, made its first flight outside China on Sunday by staging a flyby at the Singapore Airshow.

China calls the C919,     2     (produce) by the state-owned Commercial Aircraft Corporation of China (COMAC), its first large homegrown passenger jet. The aircraft took to the skies for its first commercial flight last May. At present, it is carrying passengers only within Chinese mainland     3     flies with China Eastern Airlines.

China has more and more confidence to     4     (eventual) compete against Boeing and Airbus. The C919’s first overseas flight comes at the time     5     Boeing is making headlines for all the wrong reasons. Last month, part of the fuselage (机身) of a 737 Max 9 Boeing plane     6     (fall) off during an Air Alaska flight in the United States.

The C919 would be the most focused aircraft at the Singapore Airshow. There is a lot of interest     7     (see) the actual aircraft, how it performs and how it is in flight. With an ability to fly between five to six hours, the C919 is perfect for regional travel.     8     had the potential to appeal to countries in Southeast Asia, Africa and Central Asia.

Currently, only a     9     (hand) of countries make their own planes because of extremely high barriers to entry in the industry. A high level of special technology, as well as huge amounts of time and resources,     10     (need).

Is it a train? Or is it a bus? Neither, it’s a Ferrobus—    1     unique form of transport found across mountainous regions of South America.

Combining old road bus bodies with rail wheels, these strange-looking machines are a lifeline     2     a lot of remote mountain villages     3     (lack) official road access. Using otherwise     4     (abandon) rail lines—often built in the 19thand early 20th century—Ferrobus routes can     5    (find) in Chile, Bolivia and Colombia, climbing high into the Andes. There are two different Ferrobuses     6     leave on different days.

Ferrobus trips are increasingly popular with tourists wanting to avoid uncomfortable and often     7     (danger) road journeys. Chile’s Gondola Carril from Los Andes to Rio Blanco, north of Santiago, operates     8    (pure) for tourists, but others provide regular, if somewhat unpredictable, transport for     9     (local) and tourists alike.

Bolivia is arguably the center of the Ferrobus world, with at least three routes, although there’s a constant risk of disruption (中断) from floods, rock falls and extreme weather.

Riding a Ferrobus     10     (require) patience and nerve, but you are guaranteed to return with some hair-raising stories to tell your friends.