题目:
—What would you wish to do if you were a college student again?
—That's very hard to say, but I wish I___________ when I was a college student.
A.has not studied biology
B.did study biology
C.had studied biology
D.studied biology
答案:
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(9分)(1)。(1分)(2)SP2、离子晶体(3)>、三角锥形(4)HF分子间易形成氢键,气态HF中存在(5)考查元素周期表及元素周期律的知识(1)元素⑩为铜,为ds区域元素,外围电子排布式为(2)元素③与①形成的...