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题型：单选题题类：真题难易度：容易

We will have a picnic ________ it doesn't rain tomorrow.

A、though B、unless C、until D、if

举一反三

Confucius once said, "Everything has beauty, not everyone sees it."

The little boy ate a big meal he said he wasn't hungry.

Vera, turn the heat down, ___ your cake will burn.

—What do you think of your junior high school life?

—I think it is enjoyable, I sometimes have some trouble in study.

The environment will be much worse ______everyone has a sense of protecting it.

I'm not interested in the new movie at all，________ it is very popular.

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