农作物布局的内容有哪些？

用科学记数法表示：-0.00000000702=（    ）。

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What is “Walk to School”?

Now we are working on a programme of “Walk to School”. We would like as many parents and children as possible to take part, even if in a small way. Children who walk to and from school along with their parents can learn essential (基本的) road safety and life skills.

You can take part by…

Walking to and from school with your child every day.

■ Walking for one or two days during the week.

■ Encouraging others to walk, if you already do.

Walking is great!

■ Walking is great exercise！A walk is good for your body and can keep you fit.

■ You won’t have to waste time looking for a parking site.

■ It’s free. You’ll save money by not using the car.

■ It’s pollution free.

■ It’s a good chance to talk to your children and to meet other parents, too.

Enjoying walking to school!

Here are some suggestions to help you and your child enjoy walking to school.

■ Plan a safe route together.

■ Teach children what a kerb (马路牙子) is and what it means.

■ Encourage your child to help you choose the safest places to cross the road.

■ Look at and discuss the things you see on your way － especially road signs and what they mean.

Walk to school! Thousands of parents and children already take part, could you?

Please go to www.walktoschool.org.uk for more information.

63. Who are encouraged to take part in the programme of “Walk to School”?

A. Children.                          B. Parents and children.

C. Bus drivers.                        D. Teachers.

64. By walking to and from school, children can learn ________.

A. driving skills     B. road safety and life skills

C. running skills D. knowledge about science

65. What is the first thing to do if you want to enjoy your walking to school?

A. Plan a safe route with your children.

B. Learn what a kerb is and its meaning.

C. Choose the safest places to cross the road.

D. Find road signs and know their meanings.

66. According to the writer, you can learn more about “Walk to School” by________.

A. reading a newspaper                    B. making a phone call

C. going to the Internet                    D. having a traffic lesson

在客户信用评价中，由个人因素、资金用途因素、还款来源因素、保障因素和企业前景因素等构成，针对企业信用分析的专家系统是()。

A.5Cs系统

B.5Ps系统

C.CAMELs系统

D.4Cs系统

跳板是朝鲜族群众喜爱的一种娱乐活动，若支点在跳板的中央，当质量为60kg的两名运动员同时从1.5m高处由静止下落到跳板的同一端，静立于跳板另一端质量为50kg的一名女运动员向上弹起3m高．若不计空气阻力，跳板的机械效率为______．

网桥是在______上实现不同网络的互联设备。

A．数据链路层

B．网络层

C．对话层

D．物理层