Diseases of Agricultural Plants
    1．題目：How many diseases are known to attack wheat?
    答案：D）Around 40.
    2．題目：According to this passage, which of the following would a plant disease result in if left unchecked?
    答案：D）Social upheavals.來源：www.examda.com
    3．題目：What is the main idea of the second paragraph?
    答案：A）Some plants have relative immunity to a great many diseases, while others have a susceptibility to them.
    4．題目：According to the passage, some plant diseases can be prevented by
    答案：B）inoculation.http://ks.examda.com
    5．題目：Which of the following statements is not true?
    答案：D）Symptoms are always helpful in identifying diseases.
    速記口訣：
    農(nóng)作物病蟲害
    1．40疾病已知道____________________
    2．作物疾病引動蕩____________________
    3．疾病免疫是主旨____________________
    4．接種可去阻止病____________________
    5．癥狀用來定疾病____________________ [衛(wèi)生類B]