Genetically engineered crops are sometimes released into the environment before they have been _________.
A: slip by undiscovered
B: health effects
C: adequately tested
D: public relations exercise
A: slip by undiscovered
B: health effects
C: adequately tested
D: public relations exercise
举一反三
- Sometimes new ideas have to be tested many times before ______ .
- In which part should information about corporate policies regarding work environment, public relations, health and safety, etc. be included? ( )
- The negative effects of GM crops have been shown on animals in many studies. 不属于common knowledge.
- The negative effects of GM crops have been shown on animals in many studies. 不属于 common knowledge.
- Sometimes new ideas have to be tested many times before ______ . A: A.accepting fully B: B.being fully accepted C: C.fully accepting D: D.fully being accepted