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1.Water is very________to crops. (importance)
2.There is some ancient________in the museum. (furniture)
3.________, I finally missed the bus. (lucky)
4.On the________floor,there are two extinguishers. (eight)
5.Don't drop a________cigarette on the carpet. (burn)
6.Yesterday we went to the shop to buy some________chairs. (wood)
7.My mother prefers________clothes to silk ones. (wool)
8.Let's do something to stop________our environment. (pollute)
9.Winter is coming. I need to buy a new pair of________. (glove).
10.Nothing is more important than________protection.(environment)
11.There is much________in my flat. (furniture)
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
