【简答题】A new study finds that plants communicate with one another to warn of er. We often consider plants as the furniture of the natural world. They don’t move; they don’t make sounds, they don’t seem t...
【单选题】To paraphrase 18th-century statesman Edmund Burke, “all that is needed for the triumph of a misguided cause is that good people do nothing.” One such cause now seeks to end biomedical research because...
【简答题】“Global warming could make humans shorter,” warn scientists who claim to have found evidence that it caused the world's first horses to shrink(收缩) nearly 50 million years ago. In fact, a team from the...
【简答题】Questions 1-7 Complete the following statements using NO MORE THAN THREE WORDS for each answer. 1. Rising temperatures on Earth’s suce are forcing animals and plants to move to __________ and make ...