The chemical is lethal to rats but safe to cattle.
A: toxic
B: harmful
C: deadly
D: contagious
A: toxic
B: harmful
C: deadly
D: contagious
举一反三
- The chemical is deadly to rats but safe to cattle.() A: fatal B: hateful C: good D: useful
- It has been proved that the chemical islethalto rats but safe for cattle. A: fatal B: reactive C: unique D: vital
- To annoy Heracles after he took the cattle of Geryon, Hera sent a bear to bite the cattle.
- Which of the following livestock has the biggest number in the UK?（） A: ABeef cattle. B: BDairy cattle C: CChicken. D: DSheep.
- ED50 means A: Median effective concentration B: Median toxic dose C: Median lethal dose D: Median effective dose