Nuclear fusion is the force that powers the Sun, the stars and hydrogen bomb, merging the nuclei of atoms and not splitting them apart, as in nuclear reactors. A. merging the nuclei of atoms and not splitting them apart, as in nuclear reactors. B. merging the nuclei of atoms instead of splitting them apart, like nuclear reactors. C. merging the nuclei of atoms rather than splitting them apart, as nuclear reactors do. D. and merges the nuclei of atoms but does not split them apart, as is done in nuclear reactors. E. and merges the nuclei of atoms, unlike the nuclear reactors that split them apart. 选哪个?为什么?
[此贴子已经被作者于2009-1-22 11:24:13编辑过] |