昆虫学英文（ ）。 A: Entomology B: Insect C: Insecta D: Insecticide

From the Warring States to the early Han Dynasty, the emperors and nobles asked some alchemists to make ___________________ to prolong human life to eternalness. ( ) A: elixir B: fire medicine C: dried fruit D: insecticide

Passage Two What is the most surprising suggestion scientists give A: Changing the way of spraying crops. B: Buying some outdoor insect lamps. C: Using a combination of three insecticide. D: Trying to attract new insects onto the crops.