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问题 选择题

若（a+1）2+|b-2|=0，则2a+b-1的值为（　　）

A．1

B．-1

C．3

D．-3

答案

∵（a+1）2+|b-2|=0，

∴a+1=0且b-2=0，

解得：a=-1，b=2，

则2a+b-1=-2+2-1=-1．

故选B

单项选择题

Juniper Corp’s stock transactions during the year 2004 were as follows: January 1 540000 shares issued and outstanding March 1 50 percent stock dividend July 1 180000 treasury shares reacquired October 1 60000 treasury shares reissued When computing for earnings per share (EPS) computation purposes, what was Juniper’s weighted average number of shares outstanding during 2004（）

A. 735000.

B. 870000.

C. 766667.
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多项选择题

关于垂体性侏儒症，说法正确的是（）

A.17岁以前IGF-1浓度小于0.45IU／L，应高度怀疑垂体性侏儒症

B.血清IGF-1明显较低而生长激素正常时也可出现垂体性侏儒症

C.17岁以前IGF-1浓度小于0.15IU／l，应高度怀疑垂体性侏儒症

D.1～8岁儿童血清IGF-1浓度小于0.15IU／L，应高度怀疑垂体性侏儒症

E.9～17岁青少年IGF-1浓度小于0.15IU／L，应高度怀疑垂体性侏儒症
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