口算。(1)14-6=(2)4+30=(3)17-8=(4)12-9=(5)55

题型:口算题

问题:

口算。
(1)14-6=(2)4+30=(3)17-8=(4)12-9=
(5)55-5=(6)2+45=(7)10+9=(8)46-6=
(9)56-6=(10)9+9=(11)18-9=(12)30+8=
(13)35-5=(14)30+9-9=(15)48-8+9=(16)30+6-36=
考点:20以内的减法(退位)百以内的加法(不进位)百以内的减法(不退位)百以内的连加,连减,加减混合计算及应用
题型:口算题

阅读理解。

     There are more than 3000 languages in the world today, but only about ten are major languages of the

world. Among them English is the most popular.

      More than 350 million people speak English as their first language. Major English-speaking countries

are Britain, Australia, New Zealand, Canada and the USA. Another 400 million speak it as a second

language. No one knows how many people speak English as a foreign language. They usually learn English

as a school subject instead of learning it from their parents. Chinese is the only language with more speakers

than English. This is because of the large population of China.

     English is the language for a better understanding between peoples of the world. It is also the language

for business and science. Nearly half of the business deals in Europe are done in English, and more than

half of the science magazines are in English. English is widely used in the world's computer network. And

children should begin with English when they learn how to use computers. Through the English language

peoples of different countries are able to work together and make things even better.

1. English is the most popular language in the world because _____. [ ]

A. it has the largest number of speakers

B. it is widely used

C. it is an international language

D. it is a language for world use

2. The world's computer network takes English as _____. [ ]

A. its only language

B. one of the main languages

C. a school subject

D. a foreign language

3. If you wnt to learn how to use computers, you should _____. [ ]

A. speak English well first

B. work together with foreigners

C. learn English first

D. make things better

4. If you know English, you'll be able to _____. [ ]

A. do everything better than before

B. understand what people from different countries say

C. read nearly all the science magazines in the world

D. read many science magazines in the world

5. The main difference between first language and second language is _____. [ ]

A. first language is important

B. first language is learned from parents

C. second language is learned at school

D. Both C and D.

题型:口算题

不能用于检测病毒蛋白成分的方法是().

A.Southem印迹法

B.DNA-DNA探针杂交

C.RNA-DNA探针杂交

D.蛋白印迹分析

E.RT-PCR

题型:口算题

小儿麻痹症患者不宜选用下列哪种麻醉()

A.硬膜外麻醉

B.腰麻

C.乙醚麻醉

D.静脉麻醉

E.氯胺酮静脉麻醉

题型:口算题

* * 手术时应作何种切口?()

A、矢状切口

B、冠状切口

C、水平切口

D、放射状切口

题型:口算题

神经肌肉传导被完全阻滞时,需有效占据乙酰胆碱受体()

A.80%

B.85%

C.90%

D.95%

E.99%

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