Biologists have ascertained that specialized cells convert chemical energy into mechanical

Biologists have ascertained that specialized cells convert chemical energy into mechanical energy.

A．determined

B．argued

C．pretended

D．hypothesized

请帮忙给出正确答案和分析，谢谢！

您可能感兴趣的试题

Nowadays, biologists tend to believe that humansA．occupy the top of the food chain.B．inhab

答案解析
The（）process ascertains which risks have the potential of affecting the project and doc

答案解析
They all agreed that the changes that have taken

答案解析
They all agreed that the changes that have taken

答案解析
They all agreed that the changes that have taken

答案解析
Biologists estimate that as many as 2 million lesser prairie chickens---a kind of bird liv

答案解析
I don have that much money.I have to()for a scholarship.

答案解析