问题 选择题

基本操作正确的是(  )

A.拿细口瓶倒液时,细口瓶贴的标签的一面要被向手心

B.用酒精灯的内焰部分给物质加热

C.给试管里的液体加热,液体体积可以超过试管容积的1/3

D.用药匙取用固体药品

答案

A、取用液体药品时,拿细口瓶倒液时,细口瓶贴的标签的一面要向着手心,而不是背向手心,否则残液流下来会腐蚀标签,所以错误.

B、酒精灯的外焰处酒精与氧气接触面积大,燃烧充分,火焰温度最高,故要用外焰给物质加热,所以错误.

C、给试管里的液体加热,液体体积不能超过试管容积的三分之一,否则液体沸腾后易喷出伤人,所以错误.

D、粉末状的固体药品常用药匙取用,所以正确.

故选D.

选择题
阅读理解

Governments all over the world make public reports about the condition of their economies. Most countries, including the United States, have used a measure called the gross national product (国民生产总值)or GNP. It includes all goods and services produced by citizens of the country anywhere in the world.

Recently the American Commerce Department has started using a new method to measure production. It is known as the gross domestic product(国内生产总值)or GDP. It counts only goods and services that have been produced within the nation’s borders. Money earned by foreign companies operating in the United States is included in the GDP, but money earned by American companies operating in other countries is not.

Economic experts generally approve of the change. They say that the gross domestic product provides a truer measure of the economy. They also note that most other industrial countries use this method. Therefore it will be easier to study the economies of different countries. Some officials also hope the new system will help them make better economic policy decisions. It will provide them with a clearer understanding of economic activity in the U.S. . The new measure is less likely to be affected by sudden changes in foreign oil prices or in the value of the American dollar in other countries.

Economic experts believe that the change from GNP to GDP will immediately reduce the value of American production by at least 40,000 million dollars a year. But that is really a very small change in the American economy – less than 1% . The Commerce Department reports the unofficial gross domestic product once every three months. The government also continues to report GNP as it has four times a year since 1941.

小题1:To report the American GNP, the government should not consider goods and services produced _______.

A.by American companies at home

B.by American companies in China

C.by American companies in Singapore

D.by Japanese companies in the United States小题2:To report the American GDP, the Commerce Department should count money earned ________.

A.by both American and foreign companies in America

B.by American companies within its own borders

C.by foreign companies in the United States

D.by American companies in its foreign markets小题3:GDP is considered better than GNP by some economists because ________.

A.it is something new

B.it is used by most countries

C.it is easier to calculate

D.it is less likely to be affected by the foreign market小题4:What will happen to the value of American economy if GDP is used to replace GNP?

A.It will be seriously affected.

B.It will not be affected.

C.It will come down a little.

D.It will slightly go up.小题5:How often are the reports of GDP issued by the American Commerce Department?

A.once every four months

B.once every three months

C.once every six months

D.once a year