Question 15
According to the passage, which is of the following is true about Haber nitrogen?
A. Haber nitrogen is more effective at increasing the yield of wheat crops than that of maize or oat crops.
B. Undesired effects can result from the application of surplus quantities of Haber nitrogen.
C. Haber nitrogen was the first non-naturally occurring substance to be applied to crops as fertilizer.
D. Haber nitrogen may not be effective if applied at an improper time in wheat’s growth cycle.
E. Farmers were quick to adopt Haber nitrogen because it made their crops grow taller and thicker.
我的答案： 无