阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。
A
Dear Tommy,
I am Ole Orvér, Finnair's chief commercial officer. It's my pleasure to warmly welcome you back tothe skies with Finnair. Id like to reflect on some of the developments that we hope you find exciting andhelpful:
●This summer season you can fly with Finnair to over 70 European and five US destinations. InAsia, we serve eight cities, including Guangzhou and newly added Mumbai starting 6 August. Weoperate over 300 daily flights and I'm excited about the addition of Seattle and Dallas to our US network.
●Travel is recovering everywhere, and airports around the world are working hard to manageincreased traffic volumes. It is a good idea to reserve some extra time at the airport before your flight.We are doing our very best together with our partners both at Helsinki and in our outstations to offer you asmooth travel experience during this popular travel season.
●You are again able to offset(碳补偿） flight carbon emissions, this time with a service thatcombines sustainable aviation(航空） fuel and certified climate projects. We at Finnair have ambitiousemissions targets and our customers wish for a simple and transparent way to contribute.
●Finnair Plus turned 30 in May. We are committed to developing the programme further to serveyou in the best possible way. To make your flight bookings smoother, we recently upgraded theexperience of booking award flights in the Finnair app.
Finally, Id like to thank you for your patience when we haven't got things quite right. Whereveryou're travelling in the next few months, I hope it's memorable. Thank you for flying Finnair.
Kind Regards,
Ole Orvér
21. Which city is a new addition to the Finnair's Asian network?
A.Guangzhou. B.Mumbai. C.Seattle. D.Dallas.
22.What is Finnair doing to help the environment?
A. Launching a climate project. B. Developing sustainable fuels.
C. Donating to a green programme. D.Offering a carbon offset service.
23.Why does Finnair write this letter to Tommy?
A. To express sincere gratitude. B. To introduce new routes.
C. To apologize for bad service. D. To keep a regular customer.
