【正确答案】 A

【答案解析】[听力原文]
If you"re studying a foreign language, you"ll know that learning vocabulary can often be a painstaking process. After all, there are thousands upon thousands of words, expressions and idioms to learn. But sometimes, new words appear that can confuse even native speakers. Each year, a new set of words and expression is added to the dictionary, reflecting the changing tastes and habits of a nation.
Members of the public were invited to submit new words and phrases to the Collins online dictionary, around 80 of which were chosen to appear in the new edition. They range from slang or colloquial terms, to words describing food, technology or scientific ideas. For example, if you"re happy about a situation, perhaps you might be "made up"; if not, you may end up telling someone to "jog on", or go away. Some of the words added may be a little more familiar. "Facebook" is one of the world"s biggest social media websites, so it"s not surprising that it has made it into the dictionary. Similarly, terms such as "SMS" and "Twitterer" reflect the ever-advancing technological age in which we live. Maybe you know a "bridezilla", a play on words to describe a woman whose behavior in planning her wedding is intolerable. If you"re health conscious, you might be filling your supermarket pushcart with super foods.
Sometimes, learning a language can be tough and, with new words being added all the time, don"t panic if you find that you"ve forgotten the name of something. Now, you can safely call it an oojamaflip, instead.

What makes learning a foreign language difficult?

[解析] 短文在描述词汇量时提到...learning vocabulary can often be a painstaking process... there are thousands upon thousands of words, expressions and idioms to learn. 即“学习词汇通常是个痛苦的过程，有成千上万的词汇、词组和俗语需要学习”，由此可知，人们在学习外语时感到困难，主要原因是单词的数量巨大。因此答案为选项A。

【正确答案】 B

【答案解析】[听力原文]
How does the Collins online dictionary collect new words?

[解析] 短文中明确指出Members of the public were invited to submit new words and phrases to the Collins online dictionary...也就是说，柯林斯在线词典在修订词条时，是以大众的推荐为主进行选择，也可以说他们征求了普通民众的意见。因此答案为选项B。

【正确答案】 D

【答案解析】[听力原文]
What does "super foods" probably mean?

[解析] 此题是针对super foods的意思进行提问。短文在提到super foods一词时，提到If you"re health conscious, you might be filling your supermarket pushcart with super foods. 即“那些对健康问题十分在意的人们去超市会购买super foods”，由此推测，super foods指的应该是对健康有益的食品。因此答案为选项D。