题目内容
18.Having failed my history and geography exams,I decided to ________ science subjects.( )A. | make sure | B. | concentrate on | C. | refer to | D. | come up with |
分析 由于我的历史和地理考试不及格,我决定集中精力学理科.
解答 答案B.
make sure确保;务必;concentrate on专心于,把思想集中于;将…集中于…; refer to参考;指的是;涉及;适用于;come up with想出;提出.句子表达的意思是"由于我的历史和地理考试不及格,我决定集中精力学理科";故答案选B.
点评 本题考查动词短语的辨析.英语中有的词组没有捷径,只有平时加强记忆,要注意区别,记忆的时候不能忽视,这是常见的命题方式.平时要加强记忆,做题时,别忘了要结合上下文句意判断.

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