[单项选择]He was______ for military service at the age of eighteen and spent a year in the army.


A. called in
B. sent out
C. called up
D. taken on

[单项选择]In place of military service, president Chirac proposed the establishment of ______.
A. a new military academy
B. a rite of passage for young Frenchmen
C. conscription over a period of six years
D. professional armed forces

[单选题] He was not ( ) for the examination because he was over age.
A. intelligent
B. legal
C. visional
D. eligible

[单项选择]

Passage Four
As he closed his service station at 1:20 one Sunday morning, Tony Payseur set on the ground a metal cash box containing $7000. At home a short while later, he reached in the back of his car for the box. It was missing.
Realizing that he must have left it outside the station, Payseur speeded back. The box was gone. Sunday morning; although he felt iii, Payseur went to work with his two sons. Then, in the middle of the afternoon, a man named Wayne came and told his story. Passing the station minutes after Payseur left the previous night, Brazzell had spotted the metal box. Thinking it was a tool-box someone had left accidentally, he stopped and picked it up. About 3 p. m. Sunday, Brazzell opened the box. Finding it filled with cash, he rushed to the station.
"I couldn’ t believe someone would be so honest," Payseur said it when he got back his box.

What is the passage mainly about（）
A. How the missing metal box was returned.
B. Mr. Payseur is a lucky man.
C. Mr. Payreur' s metal box.
D. Mr. Payseur' s carelessness.

[单选题] He began learning English （）_ the age of five.
A. for
B. on
C. in
D.at

[单项选择]等式y_i＝a+bx_i+e_i中，e_i为( )。
A. 回归系数
B. 回归常数
C. 回归余项
D. 残差项

[单项选择]He became so hungry that he


A. went to sleep
B. ate paper
C. went to the dinner-table
D. kept out of the way

[单选题]EIARS-232C的电气特性规定了逻辑“l”的电平电压为()。
A.-5+5V
B.-5OV
C.+5+15V
D.-15-5V