“动形以达郁”告知我们保障生命活动正常进行的有效措施是活动身体。（）
A. 对
B. 错
20世纪80年代初期,上海在生活方面,住房、交通、环境是全国倒数第一。()
A. 对
B. 错
A good business plan _____you through very stage of your business.
A. starts
B. runs
C. makes
D. leads
Parents are responsible _____installing the child safety seat in their cars.
A. with
B. at
C. for
D. in
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