The majority of people, about nine out of ten, are right-handed. (1) until recently, people who were left-handed were considered (2) , and once children showed this tendency they were forced to use their right hands. Today left-handedness is generally (3) , but it is still a disadvantage in a world (4) most people are right-handed. For example, most tools and implements are still (5) for right-handed people.
In sports (6) contrast, doing things with the left hand or foot, .is often an advantage. Throwing, kicking, punching or batting from the" (7) "side may result in throwing (8) many opponents who are more accustomed to dealing with the (9) of players who are right-handed. This is why, in many (10) at a professional level, a (11) proportion of players are left-handed than in the population as a whole.
The word "right" in many languages means "correc
A. by
B. with
C. to
D. at
To sleep. Perchance to file Findings published online this week by the "Proceedings of the National Academy of Sciences" further support the theory that the brain organizes and stows memories formed during the day while the rest of the body is catching zzz’s.
Gyorgy Buzsaki of Rutgers University and his colleagues analyzed the brain waves of sleeping rats and mice. Specifically, they examined the electrical activity emanating from the somatosensory neocortex (an area that processes sensory information) and the hippocampus, which is a center for learning and memory. The scientists found that oscillations in brain waves from the two regions appear to be intertwined. So-called sleep spindles (bursts of activity from the neocortex) were followed tens of milliseconds later by beats in the hippocampus known as ripples. The team posits that this interplay between the two brain r
A. The electrical activity is emanating from the somatosensory neocortex.
B. Oscillations in brain waves are from hippocampus.
C. Somatosensory neocortex and hippocampus work together in memory consolidation.
D. Somatosensory neocortex plays it primary role in memory consolidation.
| The mental health movement in the
United States began with a period of considerable enlightenment. Dorothea Dix
was shocked to find the mentally ill in jails and almshouses and crusaded for
the establishment of asylums in which people could receive human care in
hospital-like environments and treatment which might help restore them to
sanity. By the mid 1800s, 20 states had established asylums, but during the late
1800s and early 1900s, in the face of economic depression, legislatures were
unable to appropriate sufficient funds for decent care. Asylums became
overcrowded and prison-like. Additionally, patients were more resistant to
treatment than the pioneers in the mental health field had anticipated, and
security and restraint were needed to protect .patients and others. Mental
institutions became frightening and depressing places in which the rights of
A. overly emotional B. cleverly deceptive C. cautiously optimistic D. fiercely independent [简答题]机淤分几种形式？
[判断题] 补偿导线不应有中间接头,否则应加装接线盒。( )
A.正确 B.错误 [判断题]CCBⅡ制动机防滑阀仅有作用电磁阀得电时，供给制动缸的空气被隔离，制动缸保压。
A.正确 B.错误 [单项选择]对于公开的发明所享有的独占权是( )。
A. 专利权 B. 商标权 C. 商业秘密 D. 著作权 [单项选择]He discovered from the timetable that the train was (56) in twenty minutes. Edgar settled himself into a corner, worried (57) when people saw him they would all wonder (58) a child like him was making a train journey alone. He sighed with (59) when at last he heard the first sound of the train and then saw it roar in the train (60) was to take him out into the world. As he climbed (61) he noticed his ticket was second - class. He (62) always traveled first – class before and again he felt that everything had changed. There were differences he had never (63) before. His (64) companions were not (65) those he usually met. Some Italian workmen with hard hands and rough voices sat opposite, (66) spades and shovels, and looked out with dull, blank expressions. They had been working (67) money. Edgar thought, but he couldn’t imagine (68) it could be. He became (69) for
A. saw B. looked C. seemed D. watched [判断题]RAMAN 放大器的 放大效应是由光纤内的信号和激光泵浦之间的非线性相互作用实现的。
A.正确 B.错误 [单项选择]在肝细胞内由胆固醇转变为胆汁酸的过程很复杂，需经过羟化、加氢及侧链氧化断裂等许多酶促反应才能完成。其限速酶是（）
A. 3α羟化酶 B. 12α羟化酶 C. 7α羟化酶 D. 还原酶 E. 水解酶 我来回答: 提交
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