1．With medical breakthrough (突破), people are living a healthier and longer life.
2．As is well known to all, there are altogether (总共) seven continents in the world.
3．Our school is a nonsmoking school.So smoking is forbidden (禁止) here.
4．Economists are working on the assumption (假设) of an interest rate cut.
5．I think our offer is reasonable (合情理的) and realistic and you shouldn't turn it down.
6．This question is quite straightforward (直接的), while that one is much more complicated.
7．But just as a coin has two sides, Internet has its own drawbacks (缺点) which should not be neglected.
8．She is overweight, but she can't resist (抵制；抵抗) eating more delicious food.
9．They may know the rules correctly, but they are unable (不能的) to use them to work out practical problems.
