正确接近犬、猫应从（）靠近
A、后方
B、侧后方
C、前方或前侧方
D、侧面
参考答案：C
After _____ the learned girl, the young man lay on his bed , wide awake with wonderful ideas _____ into his mind .[ ]
A. arguing; crowding
B. arguing with; entering
C. arguing with: crowding
D. argued; entering
转子流量计是以压降不变，利用（）的变化来反映流量大小。
A、节流体积
B、节流面积
C、节流压力
D、节流介质
