问题 选择题

下列属于化学变化的是(  )

A.铁丝折断

B.铁丝燃烧

C.铁杵磨针

D.铁水凝固

答案

A、铁丝折断只是形状发生了变化,没有新物质生成,属于物理变化,故A错;

B、铁丝燃烧生成四氧化三铁,有新物质生成,属于化学变化,故B正确;

C、铁杵磨成针只是将铁杵的形状发生了变化,没有新物质生成,属于物理变化,故C错;

D、铁水凝固由液态变为固态,只是状态发生了变化,没有新物质生成,属于物理变化,故D错.

故选B.

单项选择题
完形填空

Mikio Tanaka is a devoted father----and prove it by taking three months off to care for his baby boy. That makes Tanaka __36__ of a revolutionary in Japan, where men are __37__ known for working long hours and __38__ in the bars with clients than mixing baby milk and changing diapers (尿布).

“It was __39__, but it was also a lot of fun,” Tanaka said, sitting __40__ the living room floor with his 4-month-old son, Daiki, __41__ on his back. “ I saw the first time he __42__. It was a great experience.”

Tanaka, 31, is one of a __43__ number of fathers in Japan who are taking a bigger __44__ inside the home. Men are a __45__ sight with kids at parks and zoos at weekends, though often __46__ yawning. Books and magazines __47__ fathers on how to play with and care for their kids. For Japan’s __48__ housewives, the changing is too late. In Tanaka’s case, his wife, Ayako, 28, was __49__ to take a full year of leave , for she was a school teacher.

__50__ for Tanaka, a department chief at his company had taken the __51__ leave a few years before, so his plan to __52__ three months unpaid leave was not a total shock to his __53__. Ayako took three months off for Daiki, then it was Tanaka’s __54__ when she went back to work. Daiki started day care full-time at __55__ month. Tanaka said at that time he was able to work again.

小题1:

A.anything

B.something

C.everything

D.nothing小题2:

A.well

B.poorly

C.specially

D.badly小题3:

A.working

B.dancing

C.drinking

D.cooking小题4:

A.easy

B.interesting

C.exciting

D.tough小题5:

A.beside

B.against

C.on

D.above小题6:

A.hanged

B.hung

C.joked

D.sang小题7:

A.fell asleep

B.stood up

C.dressed up

D.jumped up小题8:

A.growing

B.falling

C.adding

D.fixing小题9:

A.step

B.action

C.hold

D.role小题10:

A.interesting

B.different

C.common

D.short小题11:

A.seen

B.said

C.observed

D.blamed小题12:

A.drive

B.send

C.comfort

D.treat小题13:

A.self-confident

B.overworked

C.poorly-dressed

D.well-fed小题14:

A.unfair

B.unwilling

C.unfit

D.undecided小题15:

A.Hardly

B.Sadly

C.Unluckily

D.Fortunately小题16:

A.immediate

B.short

C.sick

D.same小题17:

A.teacher

B.boss

C.wife

D.child小题18:

A.take

B.give

C.make

D.offer小题19:

A.duty

B.fault

C.turn

D.decision小题20:

A.third

B.fifth

C.sixth

D.tenth