下列关于在开展土地登记代理合同中，委托人授权指示的表现不正确的是（）。 A.固定不变

读“某海域表层海水等温线和某种天气系统出现频率分布图”（下图）。回答1—3题。

1、该区域出现的天气系统可能是[ ]

A、热带气旋

B、温带气旋

C、热带高压

D、暖锋锋面

2、图中某种天气系统出现频率最高的区域面积大约为[ ]

A、5万平方千米

B、50万平方千米

C、100万平方千米

D、500万平方千米

3、与该天气系统伴生的是[ ]

A、暖流

B、伏旱

C、风暴潮

D、地热

再生障碍性贫血的发病机制检查包括（）

A.髓细胞染色体核型异常

B.CD8T⁺抑制细胞比例增高

C.Th1：Th2型细胞比值增高

D.CD4⁺细胞：CD8⁺细胞比值减低

E.骨髓细胞染色体核型正常

《建设工程安全生产管理条例》规定，“工程监理单位在实施监理过程中，发现存在安全事故隐患的，应当（）施工单位整改或暂时停止施工。”

A.请求

B.建议

C.要求

D.洽商

体格发育的第2个高峰期

A．幼儿期

B．学龄前期

C．学龄期

D．青春期

E．学龄期与青春期

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.

14（）

A.repaired

B.impaired

C.healed

D.damaged