你可能感兴趣的试题
Right Wrong Not mentioned
Right Wrong Not mentioned
trap. obstacle. criticism. advisory.
the House and Senate are furious with Mr. Bush on behalf of the scientists. research based on adult stem cells must be more promising than embryonic ones. many countries, except America, are keen on experimenting embryonic stem cells. the UK is enthusiastic about experimenting on adult stem cells.
cells that can become brain cells, blood cells or many other kinds of cell. cells that can become what they want to be pretty much any other type of cell. cells that are uncertain to become blood cells or brain cells when they grow up. cells that have not decided when they grow up.
cells that can become brain cells, blood cells or many other kinds of cell. cells that can become what they want to be pretty much any other type of cell. cells that are uncertain to become blood cells or brain cells when they grow up. cells that have not decided when they grow up.
the House and Senate are furious with Mr. Bush on behalf of the scientists. research based on adult stem cells must be more promising than embryonic ones. many countries, except America, are keen on experimenting embryonic stem cells. the UK is enthusiastic about experimenting on adult stem cells.
Right Wrong Not mentioned
scientists spurn the government and Mr Bush’s veto. other countriesare enthusiastically experimenting on embryonic stem cells. Mr. Bush’s veto does not stop stem cell research completely. all the scientists in America are furious with Mr. Bush.
scientists spurn the government and Mr Bush’s veto. other countriesare enthusiastically experimenting on embryonic stem cells. Mr. Bush’s veto does not stop stem cell research completely. all the scientists in America are furious with Mr. Bush.
Right Wrong Not mentioned
Right Wrong Not mentioned
Right Wrong Not mentioned
湘公网安备 43130202000226号