单项选择 适中0.65 引用2 组卷108
Due to acid rain, a large piece of forest in that country is believed ________ with extinction.
| A．to threaten | B．to be threatened | C．to be threatening | D．to have threatened |
22-23高一·全国·单元测试
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Hate speech on the Internet causes violence, and undermines diversity and social unity, ________ the common values and principles that bond us together.
| A．to threaten | B．having threatened |
| C．threatening | D．threatened |
There’s no snake known that will habitually attack human beings unless _______ with its life.
| A．threaten | B．threatened |
| C．threatening | D．having threatened |
Due to acid rain, a large piece of forest in that country is believed ________ with extinction.
| A．to threaten | B．to be threatened | C．to be threatening | D．to have threatened |
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