Frank.P

IELTS 2.19
2.1
But science does provide us with the best available guide to the future, and it is critical that our nation and the world base important policies on the best judgments that science can provide concerning the future consequences of present actions.
但是科学家的确给我们提供了最好的对于未来的领导，而且至关重要的是我们的国家和世界在制定政策时必须基于科学对于未来的判断。
3.1
Students all seem to have a vacation in the summer
3.2
Opening a door is a mystical act: it contains some taste of the unknown, a sense of entering a new moment, a new form of human ritual. This includes the revelation of great joy, reunion, reconciliation, and the ecstasy of long-separated lovers. Even amid grief, opening a door brings relief: it changes and redistributes human power. But closing is far scarier. This is a closing statement. Every closed door means the end of something. There are different levels of sadness at the end of a case. Slamming a door is a confession of weakness. Gently closing a door is often the most tragic act in life. Everyone knows how painful a closed door can be, especially when the people you love are far away and their voices are still there.

hiahia

不戳不戳，翻译有进步，意思都对了，有些表达要注意，不能太直译