Peter used to live in London, ______?
A．usedn't he
B．wasn't he
C．didn't he use
D．didn't he use to

判断题材料费中包括材料的二次搬运费。()

未分类题What can be inferred from Para. 2?A．There is a universal agreement on the safety level for the amount of Vitamin D intake.B．Few researches on the amount of Vitamin D intake have been carried out.C．Vitamin D belongs to the category of hormone.D．Vitamin D is only useful for retaining the bone.

未分类题Which of the following descriptions about the amount of Vitamin D intake is true?A．The upper limit of Vitamin D intake for adults is 400 lUs.B．It is dangerous for adults to take 2,000 lUs Vitamin D daily.C．An overdose of Vitamin D does not necessarily result in diseases.D．For people under 50, it is safe to take 200 lUs Vitamin D daily.

判断题施工图预算一般由设计单位编制。()

未分类题The drug companies are willing to pay leading doctors toA．manipulate medical education sessions.B．improve the individual health-care service.C．have personal contact with physicians.D．help promote the drugs they produce.