规则
Two complete sentences cannot be joined with only a comma (comma splice) or with nothing (run-on). Use a period, a semicolon, or a comma plus a conjunction.
两个完整句子不能只用逗号连接（逗号粘连），也不能什么都不用（连写句）。应使用句号、分号或“逗号+连词”。
✔ 正确： The data were incomplete; the team repeated the survey.
✘ 错误： The data were incomplete, the team repeated the survey.
→ 改正： Replace the comma with a semicolon or a period.
技巧: Check both sides of a comma: if each side could stand alone as a sentence, a comma alone is wrong.
练习：10题
Which choice completes the text so that it conforms to the conventions of Standard English?
由AUSLEX原创的讲解和题目，并非College Board官方资料。SAT是College Board的商标。