问题 选择题

明朝中期,山西大同等处,“膏腴土田……悉为豪强占种。”这反映了当时(   )

A.农业耕作技术提高

B.资本主义萌芽出现

C.自然经济解体

D.土地兼并严重

答案

答案:D

题目分析:本题主要考查学生准确解读材料信息的能力,材料中“膏腴土田……悉为豪强占种”说明当时土地兼并严重,答案选D,A B C三项与材料题意不符。

点评:在中国古代,土地兼并导致大量农民失去土地,流离失所,在当时的生产力条件下,是不利于生产发展的,是生产关系阻碍生产力发展的代表。但在今天的生产力条件下,农业生产的规模化、集约化是现代农业发展的必然趋势。只有扩大生产规模,提高科技、生产资料投入,才能真正实现农业的现代化。小农经济是落后的,始终将被取代的。因此我们应该正确认识古今土地兼并和集中的重要差异。

选择题
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.

18()

A.carried

B.observed

C.effected

D.suffered