The development of these gene technologies may be far in the future, but the moral and social issues raised by them should be di

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问题 The development of these gene technologies may be far in the future, but the moral and social issues raised by them should be discussed______, for once a technology has been______, it may be difficult to stop or control.

选项 A、democratically… freed
B、presently … invented
C、summarily… contested
D、seriously… veiled
E、hesitantly… ignored