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—Tony, we are moving this weekend. —___! Wish you happiness in your new flat.
11个月前
Do you believe __ true ___ you find high wages, you generally find high prices?
1年前
在催化剂作用下,200mL的某烷烃和某单炔烃的混合气体与H2加成,最多需要100mL氢气(同温、同压),则混合气体中烷烃与炔烃的物质的量之比为( )
1年前
Today, we will begin ________ we stopped yesterday so that no point will be left out.
1年前
1年前