不改变分式0.5x-10.3x+2的值,如果把其分子和分母中的各项的系数都化为整

题型:选择题

问题:

不改变分式
0.5x-1
0.3x+2
的值,如果把其分子和分母中的各项的系数都化为整数,那么所得的正确结果为(  )
A.
5x-1
3x+2
B.
5x-10
3x+20
C.
2x-1
3x+2
D.
x-2
3x+20
考点:分式的基本性质
题型:选择题

All students need to have good study habits. When you have good study habits, you learn things quickly. You also remember them easily.

Do you like to study in the living room? This is not a good place because it is usually too noisy. You need to study in a quiet place, like your bedroom. A quiet place will help you only think about one thing, and you will learn better. Before you begin to study, do not forget to clean your desk. A good desk light is important, too. It’s good for your eyes if there is enough light.

根据短文内容,选择最佳的答案。

小题1:To learn things quickly, you should ____________.

A.have good study habits

B.study in the living room

C.study in the bedroom

D.study with a good desk小题2:Living room is not a good place to study because_________.

A.it is too small

B.it is too noisy

C.it is too big

D.it is very quiet小题3:You’ll learn things quickly if the desk is ___________

A.high

B.low

C.clean

D.hard小题4:__________ is important for students to study well.

A.A high desk

B.A noisy place

C.An expensive chair

D.Enough light小题5:The best title(题目) of the passage is ___________.

A.How to learn well

B.Study in a quiet place

C.Study with a good desk

D.Good study habits.

题型:选择题

松林村今年植树1500棵,计划明年植树比今年增加20%.明年比今年植树增加多少棵?列式为______;明年植树相当于今年植树的百分率为______;明年一共植树多少棵列式为______.

题型:选择题

—Sit down, please.   

— _______.[      ]

A. Ok          

B. Thank you            

C. Good morning

题型:选择题

市场分析与预测是( )的关键环节。

A.市场定位

B.市场细分

C.市场经营

D.市场营销

题型:选择题

预防褥疮发生最有效的护理措施是

A.加强,营养

B.保持皮肤清洁、干燥

C.受压部位勤按摩

D.及时更换受污的被服、床单

E.协助经常更换卧位,防上局部组织长期受压

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