池塘清塘后首先出现的水生生物是（）
A.轮虫
B.枝角类
C.桡足类
D.浮游植物
参考答案：D
—Do you want to visit______ ?
—I don't think so. I feel a little tired. [ ]
A. somewhere else
B. else somewhere
C. somewhere other
D. other somewhere
室内吊车操作人员必须持什么证件？
