题目

阅读下面短文并回答问题，然后将答案写到相应的位置上（请注意问题后的字数要求） 〔1〕There are many useful suggestions and pieces of advice that can help one to improve English. Here are some useful suggestions and new tips to increase one’s English language vocabulary. 〔2〕Learning English vocabulary is about much more than just learning the right words. A broad grasp of vocabulary in the English language is based on understanding important expressions and “word combinations”, which means groups of words that often or always go together. 〔3若△ABC中，AB=13，AC=15，高AD=12，则BC的长是 [     ]A. 14 B.4，14 C. 4 D. 5，14