第27题: [单项选择]{{I}}Questions 17 - 20 are based on u talk about Dr. Benjamin Spock’s book. You now have 20 seconds to read Questions 17- 20.{{/I}}When was the book first published A. In 1994. B. In 1964. C. In 1946. D. In 1998. 参考答案:C
第28题: [单项选择]Recent study shows that regular review leads to ______performance on tests. A. improve B. improves C. improved D. improvement 参考答案:C 答案解析:[精解] 本题考查动词语态。有些动词的过去分词可以充当形容词，这里improved的意思就是“改良的，提高的，完善的”。是形容词，可以修饰performance，其他三项的词性不符合题干要求。所以本题
