No other quality is more important for a scientist to acquire______observe carefully.
A．as to
B．than to
C．just like to
D．so as to

未分类题The Browns______their breakfast when an old woman came to the door.A．just have hadB．have just hadC．just hadD．had just had

未分类题Why is there______traffic on the streets in February than in May in our country?

未分类题When he hurried to the airport, he found, to his great disappointment, his ticket and passport______at home.A．had been leftB．have been leftC．has been leftD．had left

未分类题There ought to be less anxiety over the perceived risk of getting SARS that ______in the public mind today.A．existsB．existC．existingD．existed

未分类题【C8】A．work outB．figure outC．carry outD．put out