-7ab-14abx+49ab=-7ab( )。

题型:填空题

问题:

-7ab-14abx+49ab=-7ab(    )。

考点:因式分解
题型:填空题

有一个长方形田地.长是600米,宽是300米,面积是多少公顷?如果围上篱笆,篱笆的长是多少米?如果每公顷,收白菜150吨,一共可以收白菜多少吨?

题型:填空题

SO2能使品红溶液褪色,体现了SO2的(   )

A.漂白性

B.氧化性

C.还原性

D.酸性氧化物的性质

题型:填空题

     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 practice 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 and practice 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. 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

2. 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.

3. In the last sentence, "with flying colors" means______.    

A. happily    

B. quickly    

C. colorfully    

D. successfully

题型:填空题

科学发展观的根本要求是( )。

A.以人为本
B.全面、协调、可持续发展
C.统筹兼顾
D.以邓 * * 理论和“三个代表”重要思想为指导

题型:填空题

不仅是知觉,任何其他一个心理活动和心理现象,从认知到情绪情感以至个性都离不开记忆的参与。记忆将人的心理活动的过去、现在和未来联成一个整体,使心理发展、知识积累和个性形成得以实现。
这段话的中心意思是( )。

A.记忆在人的整个心理活动中处于突出的地位
B.记忆将人的心理活动的过去、现在和未来联成一个整体
C.记忆使心理发展得以实现
D.记忆使知识积累和个性的形成能够实现

更多题库