Where did the pigment of the terracotta warriors come from? A: Chemicals B: Man-made elements C: Natural plants D: Unknown

精细化学品的英文名为： A: Heavy chemicals B: Fine chemicals C: Refine chemicals D: Special chemicals

What resource plants do you know from this course?A. Grain plants, energy plants B. Aromatic plants C. Medicinal plants, drug plants D. Industrial plants and enviromrntal protection plants A: Grain plants, energy plants B: Aromatic plants C: Medicinal plants, drug plants D: Industrial plants and enviromrntal protection plants

household chemicals

What resource plants do you know from this course? A: Grain plants B: Energy plants C: Medicinal and drug plants D: Environmental protection and industrial plants

The author mentions some exotic plants in Reading E, which implies _________. A: these plants are foreign plants that can't grow in Cornwall but for the "Humid Tropics Biome" B: the author has never seen these plants before C: thanks to the Eden Project these plants have adapted themselves to the local climate D: exotic plants are tropical plants

There are often ( fewer / more ) unhealthy chemicals in bottled water than in tap water. These chemicals come from the plastic in the bottles.

The factory was fined for __________chemicals into the river.

The Pentagon admitted______. A: using chemicals during the Korean War B: having offered chemicals to South Korea C: using chemicals to kill its enemies in 1968 and 1969 D: not having informed the soldiers of the harmfulness of Agent Orange

There are more unhealthy chemicals in tap water.