题目

The order came ________ the soldiers ________ the small village the next morning. A . that; had to leave B . that; should leave C . /; must leave D . when; should leave 答案:B制取胶体的化学方程式正确的是 [  ] A.+3HCl B.(胶体)+3HCl C.(胶体)+3HCl D.+3HCl
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