抑制结核菌DNA与细胞壁合成的抗结核药物是
A．链霉素B．毗嗪酰胺C．乙胺丁醇D．异烟肼E．利福平
参考答案：D
如动画所示,机动车在高速公路上行车，A车驾驶行为是否正确？
A large number of students _____ in the classroom. The number of them _____ about 100. [ ]
A. is; are
B. are; is
C. be; is
D. are; be
