具有补血功效，被称为"血中气药"的药物是（） A.香附 B.川芎 C.当归 D.生地

计算题：某农场10kV高压电力排灌站装有变压器1台，容量为500kV·A，高供高计。该户本月抄见有功电量为40000kW·h，无功电量为30000kW·h。电价标准见题496表1。求该户本月应交电费为多少？

以可设定抵押权的房产作为抵押物申请设备贷款，贷款最高额不得超过质物价值的( )。

A．50%

B．70%

C．80%

D．60%

如图为草原生态系统的能量流动图解模型。a、b、c表示流入各营养级生物的能量，d、e、f表示用于各营养级生物生长、发育、繁殖的能量，g、h、i分别表示各营养级生物呼吸消耗的能量，j、k、I表示流入分解者的能量。

若将上述草原生态系统开发成为农田生态系统，则其群落的演替方式是（），生态系统的（）稳定性降低，人类在此过程中对群落演替产生的影响是（）

Beyond question, Clinton was supposed to close up, stay out of sight, and avoid second- guessing his wife’s boss. After his ego blustered into oncoming traffic during Hillary’s heated primary race (1) Obama, the nation suffered from yet another turn of Clinton fatigue.

(2) this week Bill Clinton showed an instinct for robust, inclusive leadership that the (3) White House occupant could make good use of right for the time being. With President Obama struggling to (4) the political damage from the Gulf oil spill, Clinton not only can’t help himself—he’s worth being listened.

The conventional-wisdom (5) on President Obama’s early reaction to the spill was (6) he didn’t emote enough. He didn’t feel the (7) of all those people in the crisis whose livelihood would be destroyed, whose clean waters and wildlife would be (8) in black gunk.

Clinton considers this is an unfair (9) but offers a different—and more pointed— lesson to his young successor. "I think we ought to (10) in the same boat for a while... Let’s just (11) the problem, and then we can hold everybody responsible and emote or not emote, " Clinton conversed (12) CNN Anchor Wolf Blitzer.

Obama’s first (13) after the oil spill was to "feel the blame" rather than "feel the pain, " which are pretty sarcastic words as it were. No one intends to let British Petroleum (BP) management (14) the hook—for dangerously cutting corners, and for a (15) safety record. However, the President’s (16) focus on scolding BP consumed (17) White House energy while the oil gushed.

Great leaders don’t rush to criticise; Instead they instinctively (18) solutions. Rudy Giuliani, who didn’t stop to blame (19) intelligence for letting it happen, stood out from New York mayor with a girlfriend problem to 9/11 hero when he took control of a crisis and instilled confidence that a ravaged city could (20) beyond a terrorist attack.

16（）

A.important

B.special

C.initial

D.sharp