问题 单项选择题

基于以下题干:
一场马术表演中共有七个障碍物:一个鸡笼、一道障碍门、两道石墙以及三道栅栏。这七个障碍物从1到7被连续编号,它们的编号和摆放依赖下列条件:
(1)任何两道栅栏都不能连续摆放。
(2)石墙必须连续摆放。

45、如果鸡笼不紧邻任何栅栏后面摆放,则关于鸡笼可以摆放的位置,下列哪一项是完全而准确的描述

A.1、2、3号位。

B.1、3、4号位。

C.1、2、3、4号位。

D.1、3、4、6号位。

答案

参考答案:D

解析: 如果鸡笼不紧邻任何栅栏后面摆放,根据条件(1)和(2)的要求,栅栏和石墙的摆放位置一共有五种可能,即:

1
阅读理解

阅读理解。

     In America, drivers' education is part of the regular high school curriculum (课程). Every student in his

or her second year of high school is required to take a class in driver's education. However, unlike other

courses, it is not given during the regular school year. Instead it is a summer course.

     The course is divided up into two parts: class time for learning laws and regulations, and driving time to

practise driving. Class time is not unlike any other class. The students study the basic traffic laws from a text

to pass the written driving test that is given to anyone who wants to get a driver's license.

     Driving time is a chance for the students to get behind the wheel (steering wheel) and practise starting

steering, backing up, parking, switching lanes, turning corners, and all the other maneuvers (操作) required

to drive a car. Each student is required to drive a total of six hours. The students are divided up into groups

of four. The students and the instructor go out driving for two hour blocks of time. Thus, each student gets

half an hour driving time per outing. The instructor and "driver" sit in the front seats and the other three

students sit in the back.

     After the student has passed the driver's education course and reached the appropriate age to drive (this

age differs in every state but in most cases the person must be 16 years old), they can go to a designated (指

定的) state office to take their driver's test, which is made up of an eye examination, a written test, and a

road test. The person must pass all three tests in order to be given a driver's license. If the person did well in

his or her driver's education class, he or she will pass the test with flying colors and get a driver's license.

1. In America, the driver's course mentioned above _____. [ ]

A. is considered as part of the advanced education

B. is given to anyone wanting to get a driver's license

C. is carried on at the same time as other courses

D. is offered to all the students of Grade 2 in high schools

2. We can infer that the students are required to _____ in their whole driving practice. [ ]

A. spend at least six hours driving

B. get half an hour driving

C. drive for two hour blocks of time

D. go out driving for twelve times

3. Which of the following is Not True for the students wanting to get their driver's license?[ ]

A. They must have their eyes examined.

B. They must be 16 years of age.

C. They should go to have their driver's test.

D. They ought to do well in their driver's course.

4. In the last sentence, "with flying colors" means _____.[ ]

A. happily

B. quickly

C. colorfully

D. successfully