单选题 A Trip to the Forest
One day Bob took two of his friends into the mountains. They put up their tents(账篷) and then rode off to a forest to see how the trees were growing.
In the afternoon when they were about ten kilometres from their camp(营地), it started to snow. More and more snow fell. Soon Bob Could hardly see his hands before his face. He could not find the road. Bob knew there were two roads. One road went to the camp, and the other went to his house. But all was white snow. Everything was the same. How could he take his friends back to the camp?
Bob had an idea. The horses Let the horses take them back! But what would happen if the horses took the road to his house? That would be a trip of thirty-five kilometres in such cold weather!
It was getting late. They rode on and on. At last the horses stopped. Where were they? None of them could tell. Bob looked around. What was that under the tree? It was one of their tents!

单选题 Bob and his two friends went to the forest to watch the trees in the forest.

【正确答案】 A

【答案解析】题句意为：“Bob和他的两个朋友到森林里去察看树木。”短文第一段第一句先指出他们到山区里去，第二句后半部分则指出他们是去森林里看树的长势，因此题句意思是正确的。

单选题 They could not find their way back because they couldn"t decide which of the two roads led to their tents.

【正确答案】 B

【答案解析】题句意为：“他们找不到回去的路，因为他们不知道那两条路中哪一条通往帐篷。”第二段第四句往后描述了他们找不到路的情况。第五句指出Bob知道那两条路，因此题句中because后的原因与原文不符，他们是因为雪太大、看不清而找不到回去的路。

单选题 It is clear that they wanted the horses to take them to the mountains.

【正确答案】 B

【答案解析】题句意为；“很明显，他们是想让马把他们带到山区去。”短文第三段指出Bob想到一个主意，即让马带路。而该段第二句和第三句都指出他们是想让马带他们回去、回到帐篷，据此可知题句中to the mountains这一部分是不对的。

单选题 Bob"s parents were waiting anxiously for them in his house.

【正确答案】 C

【答案解析】题句意为：“Bob的父母在他家焦急地等他们。”通读全文，发现文章中并没有提及Bob的父母，只提到了his house一处，因此题句的内容应归入“未提及”。

单选题 The story happened on a cold winter day.

【正确答案】 A

【答案解析】题句意为：“这个故事发生在一个寒冷的冬天。”由第二段描述的下雪及第三段最后一句中的 in such cold weather两处，再结合常识可以推知题句是正确的。