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问题 选择题

北美大陆军建立时，士兵衣衫褴褛，装备很差;各部分军队各自为战，指挥难以统一。经过华盛顿一段时间的整顿，大陆军的面貌大有改观。这表明华盛顿

①具有卓越的军事才能　②具有非凡的组织才能　③堪当民族重任　④具有高贵的品质

A．①②③

B．②③④

C．①②④

D．①③④

答案

答案：A

对军队的训练靠的主要是军事技术和组织才能。

单项选择题

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.

17（）

A.Clearly

B.Skeptically

C.Nonetheless

D.However
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单项选择题

ND上出现WXRATT信息表示什么意思（）。

A.气象雷达收发组故障

B.气象雷达增益调节故障

C.气象雷达选择的姿态输入故障

D.雷达稳定关断
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