【单选题】The population of the earth()increasing fast. One third of the population here() workers
【单选题】3*83评价蛋白质营养价值高低的主要指标是
【单选题】I don’t know .
A.
what the population of Tianjin is
B.
what is the population of Tianjin
C.
how much the population in Tianjin is
D.
how much is the population in Tianjin
【单选题】By the end of this century, the population of the world ______ , and so may the population of the small country.
C.
will have to be doubled
【判断题】细胞衰老既可以是有益的,也可以是有害的。