铁钉等尖锐物被牛误吞入胃内易引起（）（P31-18）
A、瘤胃炎
B、瓣胃炎
C、肠炎
D、皱胃炎
E、网胃炎
参考答案：E
In each of the following groups of words, there are four underlined letters or letter combinations marked A, B, C and D. Compare the underlined parts and identify the one that is different from the others in pronunciation. Mark your answer by blackening the corresponding letter on the Answer Sheet.（）
A. street
B. coffee
C. meet
D. see
如何控制磨煤机的给煤量？
