题文
Experts at the conference agreed that such a product with environmentally friendly technology is ______.
| A．worth being promoted | B．worthy promoting |
| C．worthy of promoting | D．worthy of being promoted |
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Experts at the conference agreed that such a product with environmentally friendly technology is ______.
| A．worth being promoted | B．worthy promoting |
| C．worthy of promoting | D．worthy of being promoted |
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