Explanation

　　1.The correct answer is C

　　Choice (C) is correct. It avoids the errors of the original by deleting the unnecessary pronoun “it” and by using the idiomatic “as” in place of the awkward and imprecise “like.”

　　2.The correct answer is E

　　Choice (E) is correct. It avoids the awkwardness and wordiness of the original by making “Lack of water” the subject of the sentence.

　　3.The correct answer is D

　　Choice (D) is correct. It avoids the error of the original by replacing the awkward and misused “both … and” construction with the much simpler “as well as.”

　　4.The correct answer is E

　　Choice (E) is correct. It avoids the error of the original by removing the unnecessary pronoun “They,” and by using a well-constructed phrase, “The color and flavor … are …