It has been proved that the chemical islethalto rats but safe for cattle.
A: fatal
B: reactive
C: unique
D: vital
A: fatal
B: reactive
C: unique
D: vital
举一反三
- The chemical is deadly to rats but safe to cattle.() A: fatal B: hateful C: good D: useful
- The chemical is lethal to rats but safe to cattle. A: toxic B: harmful C: deadly D: contagious
- Which of the following livestock has the biggest number in the UK?（） A: ABeef cattle. B: BDairy cattle C: CChicken. D: DSheep.
- 18.The new drug will not be put on the market ____ it has proved safe on humans.
- The new drug will not be put on the market______ it has proved<br/>safe on humans. A: if B: until C: since D: when