离开噪声环境12小时后听力恢复称
A．听觉适应 B．听觉疲劳 C．暂时性听阈位移 D．永久性听阈位移 E．噪声聋
参考答案：B
Scientists _____ DNA from one kind of plant and _____ it into another kind of plant to make a pretty new one. [ ]
A. take, give
B. make, put
C. make, give
D. take, put
长江中下游地区最有可能出现的特殊天气是（ ）
A．沙尘暴
B．台风
C．梅雨
D．春旱
