How many countries and organizations will take part in the 2019 China Beijing International Horticultural Exhibition?

In this section， you will hear five short news items.
Each item will be read only once.
After each item， there will be a fifteen-second pause.
During the pause， read the question and the four choices marked A， B， C and D， and decide which is the best answer.
Then mark the corresponding letter on the answer sheet with a single line through the centre.
16. The 2019 China Beijing International Horticultural Exhibition will open on April 29， hosting more than 16 million people from 86 countries and 26 international organizations. Construction work on four main pavilions for the expo has been completed. The infrastructures have been put into operation in the park， said the deputy director of the 2019 expo coordination bureau.
17. The art of building small wooden boats is being used to help young， at-risk adults in the United States. These young people are being trained and working as apprentices in a boat building program in Alexandria， Virginia. The Alexandria Seaport Foundation is providing support for the program. It aims to help those who have little hope of attending college or finding a well-paying job. The goal is to give young people the skills， state of mind and self-control to change their lives for the better.
18. People in Japan pay good money to eat the deadly pufferfish. There， the food is called fugu. Eating fugu is especially popular during the winter holiday season. But in the last few years， the fugu market has seen a change. The part of the ocean where pufferfish live is warming quickly. Consequently， pufferfish are traveling north to find cooler water. Along the way， new kinds of poisonous fish are being created. The Japanese government has ordered fishermen and fish traders to throw away any hybrids that they catch.
19. Alan Naiman was known for being careful about how he spent his money. But even those closest to him had no knowledge of the fortune he quietly gathered and the last act he had planned. Naiman died of cancer at age 63 last January. The man from the state of Washington gave most of his money to groups that help the poor， sick， disabled and abandoned children. He gave them $11 million. The large amount of his fortune shocked the groups that received his gifts and even his best friends.
20. The debate on whether eggs are good or bad for people is never ending， but a new study conducted by researchers at the University of Eastern Finland is definitely pro-egg. According to the study， the consumption of one egg a day is associated with a lower risk for type 2 diabetes. The key components in eggs that give them their diabetes-crushing power appear to be certain lipid molecules. Mother Nature Network pointed out that this study looked strictly at egg consumption in moderation， so this doesn’t mean we should start gorging on eggs.