作业场所的噪声,不应超过()dB。
A、80
B、85
C、90
参考答案:A
I can't connect my computer to the Intemet. There must be ______ wrong with it. [ ]
A. something
B. everything
C. anything
D. nothing
该图为某地区等高线地形图,读图完成问题
人们在甲乙丙丁地最有可能看不到古长城遗址的是()
A.甲
B.乙
C.丙
D.丁