碳水化合物在营养学上也称之为()
A.糖类
B.多糖类
C.单糖类
D.寡糖类
参考答案:A
The research project has only been ______ for three months, so it’s too early to comment on its success.
A.in the way
B.by the way
C.under the way
D.under way
As is known to us, happiness consists ____ appreciating ____ you have. [ ]
A. of; what
B. in; what
C. of; that
D. in; that