堵漏密封胶在管道、阀门套管接头或管道系统连接处出现极少泄漏的情况下使用。()
参考答案:对
Some people fear that ______ air pollution may bring about changes in ______ weather around the world.
A./, the
B.the, /
C.an, the
D.the, a
根据所给的图片,写出5个句子(5分)