楷维留学指南为广大SAT考生了分享了2013年7月9日-17日SAT官方每日一题写作篇，整理了写作改错题型和写作改进句子题型的每日一题，希望对广大SAT考生备考有所帮助！

　　SAT真题类型： Writing > Identifying Sentence Errors

The following sentence contains either a single error or no error at all. If the sentence contains an error, select the one underlined part that must be changed to make the sentence correct. If the sentence contains no error, select choice E. 

　　【2013年7月11日SAT考试官方每日一题】

Cola nuts are the caffeine-rich nuts of Cola auminata and Cola nitida, evergreen forest trees that are  A native to tropical West Africa and that are  B a member  C of the same botanical family  D ascocas.  E No error

A. A

B. B

C. C

D. D

E. E

　　【2013年7月17日SAT考试官方每日一题】

Most saxophones,  A except for the straight-bodied sopranino and soprano  B models,  C with an upturned lower end and a detachable crook,  D or neck, at the upper end.  E No error

A. A

B. B

C. C

D. D

E. E

　　SAT真题类型： Writing >Improving Sentences

Part or all of the following sentence is underlined; beneath the sentence are five ways of phrasing the underlined material. Select the option that produces the best sentence. If you think the original phrasing produces a better sentence than any of the alternatives, select choice A. 

　　【2013年7月14日SAT考试官方每日一题】

In just a couple of years, low-carbohydrate diets have accomplished what the government has failed to do in decades of trying: it has convinced the public of refined grains, that they are bad and whole grains are good.

A. it has convinced the public of refined grains, that they

B. convincing the public about refined grains, which

C. convince the public that refined grains

D. convinces the public of refined grains, they

E. convincing the public that refined grains