28.We learn from the text that before 1805 .

A.The Rocky Mountains were wholly covered with snow

B.there were no people living in the western part of America

C.no Americans knew of the existence of the Rocky Mountains

D.the Appalachians were the western frontier of the United States

29.We learn from the text that the Lolo Pass .

A.has changed a lot since 1805B.is the meeting point of three cultures

C.remains much the same as it was 200 years agoD.now attracts a large number of tourists to visit

30.Judging from the text,Lewis and Clark were most probably .

A.two native IndiansB.explorers of the early 19th century

C.merchants who did business with the IndiansD.travelers whose curiosity took them over the Lolo Pass

31.We can infer from the text that when crossing the Lolo Pass the author .

A.was attempting the impossibleB.was trying to set a world record

C.was following the trail of Lewis and ClarkD.was fighting with weather and taking unnecessary risks

28-31 CCBC

【Grey clouds move as low as smoke over the treetops at Lolo Pass.阅读理解答案】相关文章：

★ A few years ago, I took a sightseeing trip to Washington, 阅读理解答案

★ Latrice Brown was excited about starting her junior year.阅读理解答案

★ So, you just finished what you thought was a great阅读理解答案

★ Jacqueline Bouvier Kennedy Onassis was one of the most private 阅读理解答案

★ Telepathy (心灵感应) is the ability to communicate 阅读理解答案

★ This selection of books and guides helps you appreciate阅读理解答案

★ Our Fears Can Change the Reality of the Situation阅读理解答案

★ While beach vacations may be a great way to take your mind off work，阅读理解答案

★ You know eating fruit and vegetables does good.阅读理解答案

★ Few acts are as cruel as making fun of the less fortunate阅读理解答案