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【单选题】
Task 2 Listen to the dialogue once and answer the questions.A.
Lucky money.
B.
Extra money.
C.
Pocket money.
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反馈参考答案：
举一反三
【单选题】关于摩尔质量与相对原子质量、相对分子质量的关系下列叙述正确的是( )。
A.
摩尔质量与相对分子质量相等
B.
摩尔质量与相对原子质量相等
C.
摩尔质量在数值上等于物质的相对原子质量或相对分子质量，其单位是g/mol
D.
摩尔质量等于相对原子质量或相对分子质量，其单位是g
【简答题】是物质的摩尔质量。摩尔质量与相对原子质量和相对分子质量的联系是 ,区别是 。Na 2 CO 3 的相对分子质量是 ,它的摩尔质量为 。
【单选题】He rarely visited his uncle, ___________ ?
A.
Didn’t he
B.
Did he
C.
Doesn’t he
D.
Does he
【单选题】He has a stomachache． He shouldn-t eat __________ for 24 hours．
A.
something
B.
everything
C.
anything
D.
nothing
【单选题】－－－－ Tom is _________ to computer games. －－－－ No wonder he is not doing well in school recently.A
A.
9. ---- Tom is _________ to computer games. ---- No wonder he is not doing well in school recently. A．interested
B.
curious
C.
crazy
D.
addicted
【单选题】The other day he ran across one of his friends on the street, whom he ___________for ages.A．hadn’
A.
9. The other day he ran across one of his friends on the street, whom he ___________for ages. A．hadn’t seen
B.
didn’t see
C.
hasn’t seen
D.
doesn’t see
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