在对200人的奶类食物消费频率调查中，有100人消费过奶类食物，（1）该人群的奶类食物消费率是多少？（2）在这100人中，50人每天食用一次，30人每周食用一次，20人每月食用一次，计算奶类每月和每周的平均消费频次。（3）计算奶类每天的消费频次，如果平均每次牛乳摄入量为200g，牛乳的热量为55kcal/100g，该人群平均每天由奶类提供的能量是多少？（结果保留一位小数）

In June 1985, two British mountaineers Joe Simpson and Simon Yates made the first-ever climb of the 21,000-foot snow-covered Siula Grande mountain in Peru. It was an exceptionally (26) job, but nothing compared to what was to (27) . Early in the process, Simpson (28) and broke his right knee. Yates could have (29) him but managed to find a way of (30) him down the mountains on a rope in a series of difficult drops. Then Simpson fell into a crevasse and Yates eventually had no (31) but to cut the (32) , completely convinced that his friend was now (33)

In his book on the (34) , Joe Simpson wrote:

(35) I looked at the distant moraines, I know that I must at least try I would probably (36) there among those rocks. If I died, well, that wasn’t so (37) , but I wouldn’t have (38) waited for it to happen. The (39) of dying no longer affected me as it had in the crevasse at first. I now had a chance to (40) it and struggle against it.

The survival of Yates himself was (41) . That Simpson somehow found a way of (42) out of the crevasse after 12 hours and then crawled and (43) himself six miles back to camp, (44) three days and might without food or drink, would be considered as a heroic fiction. But in fact it was so (45) .

45().

A. particular

B. usual

C. true

D. interesting