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问题 选择题

依次填入下列句子横线上的字正确的一组是：

①他们在一起相处得十分融______。

②这个戏试演了几场，各方面的反____很好。

③他读得很熟，以____能全文背诵。

④我以不在抗日战线上是任何力量都应当欢迎的，同时在抗战文学上也应当_____许各抒己见，标新立异。

A 恰 应 至 容  B 洽 映 致 允  C 恰 映 致 允  D 洽 应 至 容

答案

答案：D

A项中的“洽”，B项中的“映”、“致”、“允”，C项中的四个字，都是音同或音近致误。答题是要辩清它们的意义差别。

单项选择题

密度2650kg/m3、直径50μm的球形颗粒，在20℃（已知20℃空气的密度为1.205g/cm3，黏度为1.81×10-5Pa·s）的空气中的自由沉降速度接近（）。

A. 0.272m/s

B. 0.199m/s

C. 1.281m/s

D. 1.806m/s
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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.

1（）

A.embodied

B.included

C.concluded

D.consisted
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