解析：选A　细节理解题。由第二段中的"we didn't get there, so we had no media interest"可知，在本·桑德斯的第一次北极探险中，由于他们没有到达北极，所以没有引起媒体的关注。

　　2．According to Ben Saunders, if you want to stretch your self­belief, you should ________.

　　A．often test your confidence

　　B．try something adventurous

　　C．aim to reach the North Pole

　　D．always stretch your muscles

　　解析：选B　推理判断题。由第三段中的"If you never do anything that's uncomfortable or risky then your self­belief gets weaker."可知，本·桑德斯认为如果你从不做任何不舒服或有风险的事情，那么你的自我信念就会变弱，因此，如果想增强自我信念，就需要尝试一些有挑战的事情。

　　3．Ben Saunders was excited about his Antarctic adventure because ________.

　　A．he liked running a marathon

　　B．he wanted to exercise his body

　　C．he knew it might be achievable

　　D．he was sure he could do it easily

　　解析：选C　细节理解题。由倒数第二段中的"My Antarctic adventure is just practicable and that's what is exciting to me."可知，令本·桑德斯感到兴奋的是他的南极探险是可行的、可以实现的。

　　4．What can we learn from the last paragraph?

　　A．We have to change our views about adventure.

　　B．We can never know our possibilities and energies.

　　C．We should have a reason for going on an adventure.

　　D．We have to be especially talented to have an adventure.

　　解析：选B　推理判断题。由最后一段中的"with enough training and ... how far can we go? And I don't think I've found out yet"可知，我们永远不会知道我们能走多远，我们不会知道我们的潜能和力量。

　　B

Madagascar, an island nation off the southeastern coast of Africa, is home to some of the