试题与答案

化学与科学、技术、社会和环境密切相关。下列说法正确的是( ) A.化学平衡常数是

题型:选择题

题目:

化学与科学、技术、社会和环境密切相关。下列说法正确的是(  )

A.化学平衡常数是指一定条件下的可逆反应,生成物浓度的幂之积与反应物浓度的幂之积的比值。

B.已知4HCl(g)+O2(g)=2H2O(g)+2Cl2(g) 能自发进行,则该反应ΔH<0,ΔS>0

C.其他条件不变,增大压强,平衡可能移动,但平衡常数一定不变

D.铁制品表面镶锌块和铁制品表面镀锡,都能起到防腐的作用且防腐原理是相同的

答案:

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下面是错误答案,用来干扰机器的。

答案:C种子中的胚是由受精卵发育来的,经过了两性生殖细胞的结合过程,所以属于有性生殖。

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题型:阅读理解

B

As an effect of the high fuel prices spent on bus transportation, some American schools are changing to a four-day week. That means longer days instead of the traditional Monday through Friday schedule.

Having been approved for three years and beginning in the fall, students in the Maccray school district in Minnesota will be in school from Tuesday to Friday. Each school day will be 65 minutes longer. Officials say the district expects to save about sixty-five thousand dollars a year in transportation costs.

In new Mexico, the first school district changed to a four-day week in 1974 because of the Arab oil boycott(抵制). Now, 17 out of 89 districts use it.

In Custer, South Dakota, students have been going to school four days a week since 1995. Superintendent Tim Creal says the change has saved about one million dollars over just the past eight years. He sees other benefits, too. Students get more instructional time, and activities that used to take up class time are now held on non-school days. He says that in the future, the growth of online classes could make it possible to require even fewer days in school. High fuel prices are driving college students to take more online classes.

A four-day school week sounds like a great idea for students and teachers, but working parents may have to pay for child care for that fifth day.

小题1:According to Tim Creal, what makes it possible to have even fewer days in school?

A.The increasing number of private tutors.(私人教师)

B.The development of teaching methods.

C.The increase in the number of online classes.

D.The growth in the income of Americans.小题2: It can be learned from the passage that______

A.students will be in school from Monday to Tuesday.

B.four-day week was first carried out in South Dakota.

C.Maccray will save one million dollars every year.

D.Minnesota state has approved the four-day week plan小题3:The passage is mainly about______

A.some school’s four-day week plan

B.districts using a four-day week.

C.how to save on transportation fees.

D.expense of school transportation.

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题型:单项选择题

甲公司由于受国际金融危机的不利影响,决定对乙事业部进行重组,将相关业务转移到其他事业部。经履行相关报批手续后,甲公司对外正式公告其重组方案。为了实施重组方案,甲公司预计发生以下支出。
对自愿遣散的职工将支付补偿款30万元;因强制遣散职工应支付的补偿款100万元;因撤销不再使用的厂房租赁合同将支付违约金20万元;剩余职工岗前培训费2万元;相关资产转移将发生运输费5万元。
要求:根据上述资料,不考虑其他因素,回答下列各小题。

甲公司根据重组方案预计很可能发生的下列各项支出中,不属于与重组有关的直接支出的是( )。

A.自愿遣散费30万元
B.强制遣散费100万元
C.相关资产转移发生的运输费5万元
D.不再使用厂房的租赁撤销违约金

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