A．Vitamin Ａ.B．Vitamin Ｂ.C．Vitamin Ｃ.D．CarotenAccording ……

单项选择题When researchers conducted a three-year study involving nearly 3,000 people older than 65, what should these people do first

单项选择题The test conducted is mainly on______.

单项选择题If you want to lose weight, you should not take such food______really necessary.

单项选择题Any problem you can solve with a check is not a problem. It is a(n)______.

单项选择题John's remarks were______annoy his old parents at his birthday party.

单项选择题So seriously______in the train accident that he has lost his memory of anything.

单项选择题The minister of foreign affairs made a statement______he has excluded the possibility of being involved in the Gulf conflicts.

单项选择题The electronic games would not have______without being ingeniously programmed.

单项选择题The madness exhibited during the Christmas was______of the over commercialization of a sawed holiday.

单项选择题In order to ensure the success of the expedition, the team leader thought it necessary to______the most of the opportunities at hand.