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  3. How many diseases are known to attack wheat? Which of the following statements is NOT true?

How many diseases are known to attack wheat? Which of the following statements is NOT true?

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问题 How many diseases are known to attack wheat?
Which of the following statements is NOT true?
选项 A、Some plant diseases may be caused by bacteria.
B、Some plant diseases may be caused by pathogens.
C、Some plant diseases may be caused by fungus.
D、Symptoms are always helpful in identifying diseases.
答案D
解析 该题问“下列的哪个说法不正确?”农作物的疾病是由A“细菌”，B“病原菌”或C“真菌”引起的，都在最后一段中有说明，只有D“病症总能帮助我们确定疾病”没有提到。
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