化学是在原子和分子水平上研究物质的 、 、 、 和 的学科

A、原子

B、分子

C、细胞

D、组织

A、组成物质的分子中的原子

B、组成物质的分子中的原子的外围电子

C、组成物质的分子中的原子的原子核

D、组成物质的分子

E、组成物质的分子和原子

A、物质相互转变

B、应用

C、表征方法

D、制备

Youre no longer child. It’s time for you to _______ differences with your prents.upsetB．pckCYoure no longer child. It’s time for you to _______ differences with your prents.upset B．pck C．settle D．solve

A．upset

B．pack

C．settle

D．solve

If you don’t wnt your prents to worrybout you, you should lern to____ yourselflook for B．lookIf you don’t wnt your prents to worrybout you, you should lern to____ yourselflook for B．lookfter C．look up D．look down

A．look for

B．look after

C．look up

D．look down

______ youre college student，you should lern to be independent of your prents’ help.Now tht______ youre college student，you should lern to be independent of your prents’ help.Now tht B．While C．Unless D．Even though

A．Now that

B．While

C．Unless

D．Even though

Don’t tke _____ for grnted tht your prents should support youll your life .You should lern toDon’t tke _____ for grnted tht your prents should support youll your life .You should lern to be independent.this B．it C．tht D．those

A．this

B．it

C．that

D．those