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1最佳选择题 3分

FiveandahalfyearsintohispresidencyGeorgeBushfinall

A. the House and Senate had not only passed the bill widely, but veto-proof margins.
B. most Americans support the bill although George Bush vetoed an opposite bill.
C. Mr. Bush’s opinion is still final after the House and Senate had passed the bill by wide.
D. George Bush vetoed the first critical bill for embryonic adult-cell research this week.

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2最佳选择题 3分

FiveandahalfyearsintohispresidencyGeorgeBushfinall

A. cells that can become brain cells, blood cells or many other kinds of cell.
B. cells that can become what they want to be pretty much any other type of cell.
C. cells that are uncertain to become blood cells or brain cells when they grow up.
D. cells that have not decided when they grow up.

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3最佳选择题 3分

FiveandahalfyearsintohispresidencyGeorgeBushfinall

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4最佳选择题 3分

FiveandahalfyearsintohispresidencyGeorgeBushfinall

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5最佳选择题 3分

FiveandahalfyearsintohispresidencyGeorgeBushfinall

A. the House and Senate are furious with Mr. Bush on behalf of the scientists.
B. research based on adult stem cells must be more promising than embryonic ones.
C. many countries, except America, are keen on experimenting embryonic stem cells.
D. the UK is enthusiastic about experimenting on adult stem cells.

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