第一部分语言知识运用第一节 单项填空(共15小题,每小题1分,满分15分)21.We work together to achieve our common purpose: world that is safer cleaner and healthier than one we found.
What’s the _____ of having a public open space where you can’t eat, drink or even simply hang out for a while?
He managed to reach the summit of his career, but it was at the _________ of his health.
As is well known, the brain performs a very important _______, which controls the nerve system of the body.
_____ is a good form of exercise for both young and old.
“May I take your order now?” “We’d like three black _______ and two green _______.”