如图所示，质量为m的小球用长为L的轻质细线悬于O点，与O点处于同一水平线上的P点

Questions 14-18

·Using the information in the text, complete each sentence 14-18, with a word or phrase from the list below.
·For each sentence (14-18), mark one letter (A-G) on the Answer Sheet.
·Do not mark any letter twice.
14. According to Dr. Score, lightning is caused by hail falling through ______.
15. The refrigerated rod served the same functions as ______.
16. Ice particles bouncing off hail falling through a cloud acquire ______.
17. In the paragraph four the word "duplicated" means ______.
18. According to S.E. Regnolds, there could be no lightning without ______.

• A. copy
• B. a positive charge
• C. a negative charge
• D. super cooled clouds
• E. falling hail clouds
• F. hail and super cooled clouds
• G. moisture particles

当使馆馆长职位空缺时，代行使馆馆长职务的是（）

A.代办

B.临时代办

C.武官

D.大使指定的人

正值经期，大便溏泄，脘腹胀满，神疲肢软，其辨证为：

A．气虚

B．肾虚

C．阳虚

D．脾肾两虚

E．脾虚

肺经起于：

A．肺
B．胃
C．上焦
D．中焦
E．下焦

应收款项的审计目标是什么？