减尘措施是矿井尘害防治工作中最积极、有效的技术措施。

阅读理解.

                                                    The Inventions

    Paper was first made in the year 105. It was made by a Chinese named Cai Lun.

    For over 500 years paper was made only in China. People in Japan learned of paper around the

year 600. As years went by, people in other places began to make paper.

    The lead (铅) pencil is not made of lead. It is made of graphite (石墨). People found graphite in

1564. They thought it was a kind of lead. Today we still call pencils "lead pencils". The first pencils

were made by putting strings (线) around sticks of graphite.

    The first wooden pencils were made by Kasper Faber in Germany in 1761.

    Erasers (橡皮) like those we use today were first made in France by a man named Magellan in

1752. It was Hyman L. Lipman who first put eraser on the ends of pencils. And that is how the

pencils came to be.

1. How many years earlier was paper made in China than in Japan?

    A. About 100 years.

    B. About 400 years.

    C. More than 500 years.

    D. 495 years

2. Germans made paper _____.

    A. earlier than Japan

    B. later than Japan

    C. as early as Japan

    D. as late as Japan

3. At first pencils were made of _____.

    A. wood

    B. lead

    C. sticks

    D. string and graphite

4. Kasper Faber was _____.

    A. an Englishman

    B. a Frenchman

    C. a German

    D. an American

5. Which of the following statements is NOT true?

    A. Paper was first made in China.

    B. Graphite isn't a kind of lead.

    C. The first wooden pencils were made in Germany.

黄芪具有的功效是（）

A.健脾补中

B.升阳举陷

C.益卫固表

D.利尿

E.托毒生肌

下列解释保险合同条款的方法中，不属于法定解释或有权解释的是（）。

A.立法解释

B.仲裁解释

C.学理解释

D.行政解释

按降解机制，水环境容量可以分为（）。

A.稀释容量

B.自然水环境容量

C.管理水环境容量

D.自净容量

事故的预防及应急处理很重要，它包括（）。

A、加强规章制度建设和人员教育

B、建立安全监督和报警机制

C、建立应急预案及相关设施

D、进行人员应急知识培训