The purpose of the stress management courses run by Jane Collard is_

(66)

(65)

(67)

（63.The fortunate. people in the world ----the only really fortunate people in the. World in my mind are-----those whose work is also their pleasure.） （64.The class is not a large one,not nearly so large as it is often represented to be; and authors are perhaps one of the most important elements in its composition.） They enjoy in this respect at least a real harmony of life. （65.To my mind. to be able to make your work your pleasure is the one class distinction in the world worth

striving for,）And I do not wonder that others are inclined to envy those happy human beings who find their livelihood in the gay effusions of their fancy, to whom every hour of labour is an hour of enjoyment, to whom repose---- however necessary --- is a tiresome interlude, and even a holiday is most deprivation. （66.Whether a man writes well or ill. Has much to say or little, if he cares about writing at all, he will appreciate the pleasures of composition.）（67.To sit at one's table an a sunny morning, with four clear hours of uninterruptible security, plenty of nice white paper, and a Squeezer pen--- that is true happiness. ）The complete absorption of the mind upon an agreeable occupation--- what more is there than to desire? What does it matter what happens outside? The House of Commons may do what it likes, and so may the House of Lords. The heathen may rage furiously in every part of the globe.

(From' The Joys of Writing)

 （63）

(64)

According to the passage, where did the researchers obtain the DNA samples for the study?

(60)

What's Eske Willerslev's reaction to the conclusion of the study?

(58)

(57)