题目内容

Many Americans understand the life-saving value of the seat belt--the national use rate of it is at 90.1%.____________

A. 许多美国人懂得安全带的救生价值,安全带的全国使用率达到90.1%
B. 许多美国人习惯于使用安全带,系安全带可以减少死亡率达到90.1%
C. 许多美国人知道开车必须系安全带,90.1%的人都自觉遵守这一规则

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Before setting up the business, they conducted a market survey about production, sales and after-sales service.______________

A. 如果要创业,他们得有一笔启动资金,并且要有销售渠道
B. 在创业前,他们对生产、销售和售后服务进行了市场调研
C. 在开展业务前,他们对该产品的售后服务进行了市场调查

Hardly had she had supper when she _____(go) out.

It is the first time they ________ (invite) us to dinner.

He said the new machine ________ (check) when he came back.