生活在地球上的人类组成了一个大的家庭,在我们这个家庭中拥有着不同的肤色、发型、眼

题型:选择题

问题:

生活在地球上的人类组成了一个大的家庭,在我们这个家庭中拥有着不同的肤色、发型、  眼型、鼻型的成员,存在这一差别的原因是             [ ]

A.基本生理解剖特点的不同 

B.智力发展方面存在差异  

C.与人种优劣有关  

D.自然地理环境等众多因素长时间影响的结果

考点:三大人种的形成
题型:选择题

There are many ways for us to reduce (减少) waste. For example, we can reuse paper and plastic bags. We can also recycle newspapers, glass, and cans (易拉罐)      1    new things. Here are some useful      2     to reduce waste.
Write on both sides of paper
Many people write on only one side of their paper. Why not try using both sides? Some students only use half the pages of their      3    before getting new ones. Try to use up all the paper. People often give cards on birthdays or festivals. How about trying to     4      e-cards (电子贺卡) instead?
Don’t throw away your old batteries (电池)
Maybe you do not know that old batteries make the soil      5     . This is because they have poisonous (有毒的) parts in      6     . So, don’t throw away batteries.     7    them together. Try to use rechargeable (充电的) batteries for your games and CD players.
Give     8    all your unwanted clothes
There are many poor families in China. You may ask your mother to keep your unwanted clothes. Then you can pass them on to those poor children. You will feel happy that you are      9    someone else. Also, you can see       10    your friends or relatives (亲戚) want them before throwing them away.
小题1:
A.makeB.to makeC.makingD.be made
小题2:
A.plansB.helpsC.waysD.things
小题3:
A.exercisesB.schoolbagsC.notebooksD.papers
小题4:
A.sendB.buyC.receiveD.waste
小题5:
A.dryB.richC.cleanD.dirty
小题6:
A.thoseB.itC.themD.much
小题7:
A.ThrowB.KeepC.TryD.Lose
小题8:
A.away B.inC.offD.up
小题9:
A.helpingB.givingC.enjoyingD.interesting
小题10:
A.unlessB.ifC.thoughD.but
题型:选择题

我国海水环境严重受冻港水位变动区钢筋混凝土及预应力混凝土的抗冻等级标准为()。

A.F300

B.F350

C.F400

D.F450

题型:选择题

下列关于价差交易的说法,正确的有()。

A.若套利者预期不同交割月的合约价差将缩小,则进行卖出套利

B.建仓时计算价差,用远期合约价格减去近期合约价格

C.某套利者进行买进套利,若价差扩大,则该套利者盈利

D.在价差交易中,交易者要同时在相关合约上进行交易方向相反的交易

题型:选择题

锅炉燃烧时产生的烟气中带有大量灰粒,由于灰粒的()和()作用,对受热面管子产生磨损。

题型:选择题

证券公司证券自营业务的内部控制中重点防范的风险包括()。Ⅰ.规模失控、决策失误Ⅱ.变相自营、账外自营Ⅲ.操纵市场、内幕交易Ⅳ.信用交易

A.Ⅱ、Ⅲ、Ⅳ

B.Ⅰ、Ⅱ、Ⅲ

C.Ⅰ、Ⅱ、Ⅲ、Ⅳ

D.Ⅰ、Ⅱ、Ⅳ

更多题库