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smoke, matter, air, are, construction
A: What’s the ______, Kitty?
B: My eyes hurt. It’s the ______ from the traffic.
A: There’s also a ______ site. Look at the dust.
B: The workers ______ burning rubbish there. Look at the smoke from the fire.
A: The ______ in Garden City is very dirty.
B: There’s a lot of air pollution.
根据上面对话内容，在横线上填入适当的词或短语完成句子。
A lot of air pollution comes from ______ ______.
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
