某企业的年净收益额为10万元，总投资额为110万元，则投资收益率为（）。A．8.21

Young girls at high risk for depression appear to have a malfunctioning reward system in their brains, a new study suggests. The finding comes from research that (1) a high-risk group of 13 girls, aged 10 to 14, who were not depressed but had mothers who (2) recurrent depression and a low-risk group of 13 girls with no (3) or family history of depression. Both groups were given MRI brain (4) while completing a task that could (5) either reward or punishment.

(6) with girls in the low-risk group, those in the high-risk group had (7) neural responses during both anticipation and receipt of the reward. (8) , the high-risk girls showed no (9) in an area of the brain called the dorsal anterior cingulated cortex (背侧前扣带皮质), believed to play a role in (10) past experiences to assist learning.

The high-risk girls did have greater activation of this brain area (11) receiving punishment, compared with the other girls. The researchers said that this suggests that high-risk girls have easier time (12) information about loss and punishment than information about reward and pleasure.

"Considered together with reduced activation in the striatal (纹状体的) areas commonly observed (13) reward, it seems that the reward-processing system is critically (14) in daughters who are at elevated risk for depression, (15) they have not yet experienced a depressive (16) ," wrote Ian H. Gotlib, of Stanford University, and his colleagues. " (17) , longitudinal studies are needed to determine whether the anomalous activations (18) in this study during the processing of (19) and losses are associated with the (20) onset of depression," they concluded. The study was published in the April of the Archives of General Psychiatry.

5（）

A. result from

B. suppose to

C. result in

D. lead in

湖南是近代革命的策源地，其独特的历史文化背景，特殊的地理位置，引人注目的经济社会发展历程，筹造了具有鲜明特色的新时期湖南精神：敢为人先，务实进取，开放兼容，敬业奉献。新时期湖南人精神[ ]

①是中 * * 精神的重要组成部分

②是民族精神和时代精神结合的产物

③是在改革开放的社会主义建设实践中形成的

④是湖南经济社会发展的力量源泉

A．①③④

B．②③④

C．①②④

D．①②③

通汇行在大额支付系统什么状态下可以发送接收业务？

公共支出的意义表现为( )等方面。

A．公共支出提供劳务和补助所产生的利益

B．公共支出是实现政府财政职能的主要手段

C．公共支出是实现社会公平的重要途径

D．公共支出能衡量一定时期内政府支配社会资源的多少

E．公共支出是实现国民经济发展的重要资金来源和实现经济结构调整的手段之一

防止焊接接头产生冷裂纹的工艺措施有哪些？