23. We can conclude from the paragraph that _____.
(A) scientists did not fully anticipate the results of their initial experiments
(B) super-plants pose a problem because they are resistant to disease
(C) super-plants reproduce more quickly than natural ones
(D) genetic engineering could also work on people
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統計: A(81), B(29), C(85), D(4), E(0) #908333
統計: A(81), B(29), C(85), D(4), E(0) #908333