已知圆内接四边形ABCD的边长分别为AB=2，BC=6，CD=DA=4，求四边形

Holding all other factors constant, an increase in expected yield volatility will cause the price of:（）

A. a putable bond to increase.

B. a callable bond to increase.

C. embedded put and call options to decrease.

商业用途房地产的位置优劣，主要看（）。

A.临街状况

B.到市中心距离

C.繁华程度

D.安宁程度

哪项不是下丘脑性闭经()

A．假孕性闭经

B．神经性畏食，消瘦后闭

C．运动员闭经

D．多囊卵巢综合征

E．闭经溢乳综合征

A Web browser is simply a terminal emulator, designed to display text on a screen. The two essential differences between an ordinary terminal emulator and a Web browser are that the browser knows how to deal with (71) , and that it has a mechanism for (72) graphical files. Display text, display graphics, and (73) hyperlinks-there’s 99 percent of the (74) value. That’s not to say that the manufacturers didn’t go all-out to attach a hyperactive efflorescence of useless capabilities onto their browsers. Remember when media channels in the browser were a big deal, instead of the clutter you can’t wait to delete from your favorites of bookmarks menu Remember when client-side Java applets were supposed to become the preferred (75) for application development Remember frames and all their nasty side effects

（72）处填（）。

A．displaying

B．illustrating

C．drawing

D．writing

适宜青年锻炼的项目有哪些？